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Finding the Fourth Proportional to 391,494.12, 587,233.16 and 125,254.60

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Solution

The fourth proportional to 391,494.12, 587,233.16 and 125,254.60 is: 187,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,494.12 : 587,233.16 = 125,254.60 : x
  2. Step 2: Convert to fraction form
    391,494.12/587,233.16 = 125,254.60/x
  3. Step 3: Cross multiply
    391,494.12x = 587,233.16 × 125,254.60
  4. Step 4: Simplify right side
    391,494.12x = 73,553,654,562.54
  5. Step 5: Solve for x
    x = 73,553,654,562.54/391,494.12
  6. Step 6: Final answer
    x = 187,879.33

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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.