The equation of the plane containing the straight line $\frac{x}{3}=\frac{y}{4}=\frac{z}{2}$ and perpendicular to the plane containing the straight lines $\frac{x}{3}=\frac{y}{4}=\frac{z}{2}$ and  $\frac{x}{4}=\frac{y}{2}=\frac{z}{3}$ is