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Finding the Fourth Proportional to 391,013.70, 587,233.35 and 342,024.90

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Solution

The fourth proportional to 391,013.70, 587,233.35 and 342,024.90 is: 513,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,013.70 : 587,233.35 = 342,024.90 : x
  2. Step 2: Convert to fraction form
    391,013.70/587,233.35 = 342,024.90/x
  3. Step 3: Cross multiply
    391,013.70x = 587,233.35 × 342,024.90
  4. Step 4: Simplify right side
    391,013.70x = 200,848,427,810.42
  5. Step 5: Solve for x
    x = 200,848,427,810.42/391,013.70
  6. Step 6: Final answer
    x = 513,660.85

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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.