Finding the Fourth Proportional to 239,286.16, 330,214.93 and 138,742.48
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Solution
The fourth proportional to 239,286.16, 330,214.93 and 138,742.48 is: 191,464.64
Step by Step Solution
- Step 1: Write the proportion equation
239,286.16 : 330,214.93 = 138,742.48 : x - Step 2: Convert to fraction form
239,286.16/330,214.93 = 138,742.48/x - Step 3: Cross multiply
239,286.16x = 330,214.93 × 138,742.48 - Step 4: Simplify right side
239,286.16x = 45,814,838,321.23 - Step 5: Solve for x
x = 45,814,838,321.23/239,286.16 - Step 6: Final answer
x = 191,464.64
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.