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Finding the Fourth Proportional to 396,792.43, 547,577.57 and 215,507.90

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Solution

The fourth proportional to 396,792.43, 547,577.57 and 215,507.90 is: 297,403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,792.43 : 547,577.57 = 215,507.90 : x
  2. Step 2: Convert to fraction form
    396,792.43/547,577.57 = 215,507.90/x
  3. Step 3: Cross multiply
    396,792.43x = 547,577.57 × 215,507.90
  4. Step 4: Simplify right side
    396,792.43x = 118,007,291,353.22
  5. Step 5: Solve for x
    x = 118,007,291,353.22/396,792.43
  6. Step 6: Final answer
    x = 297,403.08

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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.