The recently amended Washington state rules for limited liability companies addresses the allocation of profits and losses to its members. Under the old rules, the default rule for distributions and profits and losses were to be allocated to the members in proportion to the agreed value of contributions made or required to be made by each member.
The new rule, RCW 25.15.206, provides a default rule for distributions based on the agreed value of contributions. However, there is no default rule for allocating profits and losses.
In order to avoid the default rules, the members of an LLC could draft their own agreement related to its distributions as well as allocating profits and losses. If you are interested in knowing more, I can be of assistance.