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Finding the Fourth Proportional to 396,473.82, 547,134.38 and 215,185.73

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Solution

The fourth proportional to 396,473.82, 547,134.38 and 215,185.73 is: 296,956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,473.82 : 547,134.38 = 215,185.73 : x
  2. Step 2: Convert to fraction form
    396,473.82/547,134.38 = 215,185.73/x
  3. Step 3: Cross multiply
    396,473.82x = 547,134.38 × 215,185.73
  4. Step 4: Simplify right side
    396,473.82x = 117,735,507,963.74
  5. Step 5: Solve for x
    x = 117,735,507,963.74/396,473.82
  6. Step 6: Final answer
    x = 296,956.58

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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.