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Finding the Fourth Proportional to 391,736.90, 587,657.66 and 155,024.26

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Solution

The fourth proportional to 391,736.90, 587,657.66 and 155,024.26 is: 232,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,736.90 : 587,657.66 = 155,024.26 : x
  2. Step 2: Convert to fraction form
    391,736.90/587,657.66 = 155,024.26/x
  3. Step 3: Cross multiply
    391,736.90x = 587,657.66 × 155,024.26
  4. Step 4: Simplify right side
    391,736.90x = 91,101,193,874.83
  5. Step 5: Solve for x
    x = 91,101,193,874.83/391,736.90
  6. Step 6: Final answer
    x = 232,557.09

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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.