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Finding the Fourth Proportional to 396,053.60, 594,080.40 and 129,749.90

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Solution

The fourth proportional to 396,053.60, 594,080.40 and 129,749.90 is: 194,624.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,053.60 : 594,080.40 = 129,749.90 : x
  2. Step 2: Convert to fraction form
    396,053.60/594,080.40 = 129,749.90/x
  3. Step 3: Cross multiply
    396,053.60x = 594,080.40 × 129,749.90
  4. Step 4: Simplify right side
    396,053.60x = 77,081,872,491.96
  5. Step 5: Solve for x
    x = 77,081,872,491.96/396,053.60
  6. Step 6: Final answer
    x = 194,624.85

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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.