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Finding the Fourth Proportional to 396,278.43, 594,650.93 and 147,135.39

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Solution

The fourth proportional to 396,278.43, 594,650.93 and 147,135.39 is: 220,789.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,278.43 : 594,650.93 = 147,135.39 : x
  2. Step 2: Convert to fraction form
    396,278.43/594,650.93 = 147,135.39/x
  3. Step 3: Cross multiply
    396,278.43x = 594,650.93 × 147,135.39
  4. Step 4: Simplify right side
    396,278.43x = 87,494,195,763.74
  5. Step 5: Solve for x
    x = 87,494,195,763.74/396,278.43
  6. Step 6: Final answer
    x = 220,789.70

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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.