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Finding the Fourth Proportional to 391,348.20, 587,022.30 and 224,999.40

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Solution

The fourth proportional to 391,348.20, 587,022.30 and 224,999.40 is: 337,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,348.20 : 587,022.30 = 224,999.40 : x
  2. Step 2: Convert to fraction form
    391,348.20/587,022.30 = 224,999.40/x
  3. Step 3: Cross multiply
    391,348.20x = 587,022.30 × 224,999.40
  4. Step 4: Simplify right side
    391,348.20x = 132,079,665,286.62
  5. Step 5: Solve for x
    x = 132,079,665,286.62/391,348.20
  6. Step 6: Final answer
    x = 337,499.10

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1.5x scale

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.