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Finding the Fourth Proportional to 392,337.20, 588,505.80 and 303,763.70

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Solution

The fourth proportional to 392,337.20, 588,505.80 and 303,763.70 is: 455,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,337.20 : 588,505.80 = 303,763.70 : x
  2. Step 2: Convert to fraction form
    392,337.20/588,505.80 = 303,763.70/x
  3. Step 3: Cross multiply
    392,337.20x = 588,505.80 × 303,763.70
  4. Step 4: Simplify right side
    392,337.20x = 178,766,699,279.46
  5. Step 5: Solve for x
    x = 178,766,699,279.46/392,337.20
  6. Step 6: Final answer
    x = 455,645.55

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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.