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Finding the Fourth Proportional to 396,792.66, 547,577.82 and 215,508.13

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Solution

The fourth proportional to 396,792.66, 547,577.82 and 215,508.13 is: 297,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,792.66 : 547,577.82 = 215,508.13 : x
  2. Step 2: Convert to fraction form
    396,792.66/547,577.82 = 215,508.13/x
  3. Step 3: Cross multiply
    396,792.66x = 547,577.82 × 215,508.13
  4. Step 4: Simplify right side
    396,792.66x = 118,007,470,648.73
  5. Step 5: Solve for x
    x = 118,007,470,648.73/396,792.66
  6. Step 6: Final answer
    x = 297,403.36

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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.