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Finding the Third Proportional to 266,772 and 406,934

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Solution

The third proportional to 266,772 and 406,934 is: 620,737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,772 : 406,934 = 406,934 : x
  2. Step 2: Convert to fraction form
    266,772/406,934 = 406,934/x
  3. Step 3: Cross multiply
    266,772x = 406,934 × 406,934
  4. Step 4: Simplify right side
    266,772x = 165,595,280,356
  5. Step 5: Solve for x
    x = 165,595,280,356/266,772
  6. Step 6: Final answer
    x = 620,737.11

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.