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Finding the Fourth Proportional to 396,667.73, 547,410.98 and 215,387.30

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Solution

The fourth proportional to 396,667.73, 547,410.98 and 215,387.30 is: 297,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,667.73 : 547,410.98 = 215,387.30 : x
  2. Step 2: Convert to fraction form
    396,667.73/547,410.98 = 215,387.30/x
  3. Step 3: Cross multiply
    396,667.73x = 547,410.98 × 215,387.30
  4. Step 4: Simplify right side
    396,667.73x = 117,905,373,668.00
  5. Step 5: Solve for x
    x = 117,905,373,668.00/396,667.73
  6. Step 6: Final answer
    x = 297,239.64

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1.5x scale

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.