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Finding the Fourth Proportional to 394,295.70, 591,443.55 and 331,310.10

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Solution

The fourth proportional to 394,295.70, 591,443.55 and 331,310.10 is: 496,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,295.70 : 591,443.55 = 331,310.10 : x
  2. Step 2: Convert to fraction form
    394,295.70/591,443.55 = 331,310.10/x
  3. Step 3: Cross multiply
    394,295.70x = 591,443.55 × 331,310.10
  4. Step 4: Simplify right side
    394,295.70x = 195,951,221,694.86
  5. Step 5: Solve for x
    x = 195,951,221,694.86/394,295.70
  6. Step 6: Final answer
    x = 496,965.15

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Similar ratio
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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.