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Finding the Fourth Proportional to 391,470.64, 587,197.42 and 125,230.34

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Solution

The fourth proportional to 391,470.64, 587,197.42 and 125,230.34 is: 187,842.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,470.64 : 587,197.42 = 125,230.34 : x
  2. Step 2: Convert to fraction form
    391,470.64/587,197.42 = 125,230.34/x
  3. Step 3: Cross multiply
    391,470.64x = 587,197.42 × 125,230.34
  4. Step 4: Simplify right side
    391,470.64x = 73,534,932,553.72
  5. Step 5: Solve for x
    x = 73,534,932,553.72/391,470.64
  6. Step 6: Final answer
    x = 187,842.78

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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.