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Finding the Fourth Proportional to 391,951.80, 588,122.10 and 223,601.40

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Solution

The fourth proportional to 391,951.80, 588,122.10 and 223,601.40 is: 335,513.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,951.80 : 588,122.10 = 223,601.40 : x
  2. Step 2: Convert to fraction form
    391,951.80/588,122.10 = 223,601.40/x
  3. Step 3: Cross multiply
    391,951.80x = 588,122.10 × 223,601.40
  4. Step 4: Simplify right side
    391,951.80x = 131,504,924,930.94
  5. Step 5: Solve for x
    x = 131,504,924,930.94/391,951.80
  6. Step 6: Final answer
    x = 335,513.00

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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.