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Finding the Fourth Proportional to 396,377.61, 546,772.34 and 252,976.02

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Solution

The fourth proportional to 396,377.61, 546,772.34 and 252,976.02 is: 348,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,377.61 : 546,772.34 = 252,976.02 : x
  2. Step 2: Convert to fraction form
    396,377.61/546,772.34 = 252,976.02/x
  3. Step 3: Cross multiply
    396,377.61x = 546,772.34 × 252,976.02
  4. Step 4: Simplify right side
    396,377.61x = 138,320,289,154.41
  5. Step 5: Solve for x
    x = 138,320,289,154.41/396,377.61
  6. Step 6: Final answer
    x = 348,960.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.