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Finding the Third Proportional to 155,965.50 and 217,306.13

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Solution

The third proportional to 155,965.50 and 217,306.13 is: 302,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,965.50 : 217,306.13 = 217,306.13 : x
  2. Step 2: Convert to fraction form
    155,965.50/217,306.13 = 217,306.13/x
  3. Step 3: Cross multiply
    155,965.50x = 217,306.13 × 217,306.13
  4. Step 4: Simplify right side
    155,965.50x = 47,221,951,962.52
  5. Step 5: Solve for x
    x = 47,221,951,962.52/155,965.50
  6. Step 6: Final answer
    x = 302,771.78

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.