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Finding the Fourth Proportional to 394,414.20, 591,621.30 and 226,452.60

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Solution

The fourth proportional to 394,414.20, 591,621.30 and 226,452.60 is: 339,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,414.20 : 591,621.30 = 226,452.60 : x
  2. Step 2: Convert to fraction form
    394,414.20/591,621.30 = 226,452.60/x
  3. Step 3: Cross multiply
    394,414.20x = 591,621.30 × 226,452.60
  4. Step 4: Simplify right side
    394,414.20x = 133,974,181,600.38
  5. Step 5: Solve for x
    x = 133,974,181,600.38/394,414.20
  6. Step 6: Final answer
    x = 339,678.90

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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.