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Finding the Fourth Proportional to 391,760.31, 587,295.90 and 155,269.02

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Solution

The fourth proportional to 391,760.31, 587,295.90 and 155,269.02 is: 232,766.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,760.31 : 587,295.90 = 155,269.02 : x
  2. Step 2: Convert to fraction form
    391,760.31/587,295.90 = 155,269.02/x
  3. Step 3: Cross multiply
    391,760.31x = 587,295.90 × 155,269.02
  4. Step 4: Simplify right side
    391,760.31x = 91,188,858,843.02
  5. Step 5: Solve for x
    x = 91,188,858,843.02/391,760.31
  6. Step 6: Final answer
    x = 232,766.97

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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.