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Finding the Fourth Proportional to 391,792.52, 587,642.58 and 107,511.82

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Solution

The fourth proportional to 391,792.52, 587,642.58 and 107,511.82 is: 161,255.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,792.52 : 587,642.58 = 107,511.82 : x
  2. Step 2: Convert to fraction form
    391,792.52/587,642.58 = 107,511.82/x
  3. Step 3: Cross multiply
    391,792.52x = 587,642.58 × 107,511.82
  4. Step 4: Simplify right side
    391,792.52x = 63,178,523,285.30
  5. Step 5: Solve for x
    x = 63,178,523,285.30/391,792.52
  6. Step 6: Final answer
    x = 161,255.05

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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.