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Finding the Third Proportional to 129,687 and 281,514

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Solution

The third proportional to 129,687 and 281,514 is: 611,087.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,687 : 281,514 = 281,514 : x
  2. Step 2: Convert to fraction form
    129,687/281,514 = 281,514/x
  3. Step 3: Cross multiply
    129,687x = 281,514 × 281,514
  4. Step 4: Simplify right side
    129,687x = 79,250,132,196
  5. Step 5: Solve for x
    x = 79,250,132,196/129,687
  6. Step 6: Final answer
    x = 611,087.71

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.