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Finding the Fourth Proportional to 396,955.92, 547,796.88 and 215,666.64

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Solution

The fourth proportional to 396,955.92, 547,796.88 and 215,666.64 is: 297,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,955.92 : 547,796.88 = 215,666.64 : x
  2. Step 2: Convert to fraction form
    396,955.92/547,796.88 = 215,666.64/x
  3. Step 3: Cross multiply
    396,955.92x = 547,796.88 × 215,666.64
  4. Step 4: Simplify right side
    396,955.92x = 118,141,512,512.08
  5. Step 5: Solve for x
    x = 118,141,512,512.08/396,955.92
  6. Step 6: Final answer
    x = 297,618.72

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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.