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Finding the Third Proportional to 266,442 and 398,853

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Solution

The third proportional to 266,442 and 398,853 is: 597,066.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,442 : 398,853 = 398,853 : x
  2. Step 2: Convert to fraction form
    266,442/398,853 = 398,853/x
  3. Step 3: Cross multiply
    266,442x = 398,853 × 398,853
  4. Step 4: Simplify right side
    266,442x = 159,083,715,609
  5. Step 5: Solve for x
    x = 159,083,715,609/266,442
  6. Step 6: Final answer
    x = 597,066.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.