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Finding the Fourth Proportional to 396,077.60, 594,116.40 and 129,773.90

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Solution

The fourth proportional to 396,077.60, 594,116.40 and 129,773.90 is: 194,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,077.60 : 594,116.40 = 129,773.90 : x
  2. Step 2: Convert to fraction form
    396,077.60/594,116.40 = 129,773.90/x
  3. Step 3: Cross multiply
    396,077.60x = 594,116.40 × 129,773.90
  4. Step 4: Simplify right side
    396,077.60x = 77,100,802,281.96
  5. Step 5: Solve for x
    x = 77,100,802,281.96/396,077.60
  6. Step 6: Final answer
    x = 194,660.85

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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.