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Finding the Third Proportional to 161,442 and 318,744

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Solution

The third proportional to 161,442 and 318,744 is: 629,314.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,442 : 318,744 = 318,744 : x
  2. Step 2: Convert to fraction form
    161,442/318,744 = 318,744/x
  3. Step 3: Cross multiply
    161,442x = 318,744 × 318,744
  4. Step 4: Simplify right side
    161,442x = 101,597,737,536
  5. Step 5: Solve for x
    x = 101,597,737,536/161,442
  6. Step 6: Final answer
    x = 629,314.17

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.