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Finding the Third Proportional to 187,950 and 391,451

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Solution

The third proportional to 187,950 and 391,451 is: 815,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,950 : 391,451 = 391,451 : x
  2. Step 2: Convert to fraction form
    187,950/391,451 = 391,451/x
  3. Step 3: Cross multiply
    187,950x = 391,451 × 391,451
  4. Step 4: Simplify right side
    187,950x = 153,233,885,401
  5. Step 5: Solve for x
    x = 153,233,885,401/187,950
  6. Step 6: Final answer
    x = 815,290.69

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.