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Finding the Fourth Proportional to 396,396.76, 547,024.80 and 215,104.12

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Solution

The fourth proportional to 396,396.76, 547,024.80 and 215,104.12 is: 296,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,396.76 : 547,024.80 = 215,104.12 : x
  2. Step 2: Convert to fraction form
    396,396.76/547,024.80 = 215,104.12/x
  3. Step 3: Cross multiply
    396,396.76x = 547,024.80 × 215,104.12
  4. Step 4: Simplify right side
    396,396.76x = 117,667,288,222.18
  5. Step 5: Solve for x
    x = 117,667,288,222.18/396,396.76
  6. Step 6: Final answer
    x = 296,842.20

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