Extract values by matching column values

Friends, I have two matrices, a and b. a= [ 1 2 3 ; 4 5 6] and b = [1 2 3 4 ; 4 5 6 10]. I want to extract the fourth column of matrix b by matching first three columns of a & b.

Thanks

[KSSV]

Give the out put which you expect.

[novice modeler]

4;10

Answer 1

[Andrei Bobrov]

[C,ia,ib] = setxor(a',b','rows');
out = C';