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Finding the Fourth Proportional to 396,804.97, 547,592.42 and 215,519.92

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Solution

The fourth proportional to 396,804.97, 547,592.42 and 215,519.92 is: 297,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,804.97 : 547,592.42 = 215,519.92 : x
  2. Step 2: Convert to fraction form
    396,804.97/547,592.42 = 215,519.92/x
  3. Step 3: Cross multiply
    396,804.97x = 547,592.42 × 215,519.92
  4. Step 4: Simplify right side
    396,804.97x = 118,017,074,551.01
  5. Step 5: Solve for x
    x = 118,017,074,551.01/396,804.97
  6. Step 6: Final answer
    x = 297,418.34

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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.