Verified Answer :

Edmund

The equation appropriate for this is
\(a_{n}=a_{1}+(n-1)d\)
Wherein \(_{n}\) is the missing term, \(a_{1}\) is the first number in the sequence, and \(d\) is the difference between the numbers.
So\(a_{50}=4+(50-1)6\)
    \(a_{50}=4+(49*6)\)
    \(a_{50}=4+(294)\)
    \(a_{50}=298\)
*Sorry for the error.

298, also 4 is first term. 49 terms left. 49*6=294
294+4=298