Finding the Fourth Proportional to 518,618.08, 715,691.88 and 280,154.08
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Solution
The fourth proportional to 518,618.08, 715,691.88 and 280,154.08 is: 386,612.05
Step by Step Solution
- Step 1: Write the proportion equation
518,618.08 : 715,691.88 = 280,154.08 : x - Step 2: Convert to fraction form
518,618.08/715,691.88 = 280,154.08/x - Step 3: Cross multiply
518,618.08x = 715,691.88 × 280,154.08 - Step 4: Simplify right side
518,618.08x = 200,504,000,204.87 - Step 5: Solve for x
x = 200,504,000,204.87/518,618.08 - Step 6: Final answer
x = 386,612.05
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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.