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Finding the Fourth Proportional to 396,485.59, 547,150.88 and 235,372.95

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Solution

The fourth proportional to 396,485.59, 547,150.88 and 235,372.95 is: 324,815.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,485.59 : 547,150.88 = 235,372.95 : x
  2. Step 2: Convert to fraction form
    396,485.59/547,150.88 = 235,372.95/x
  3. Step 3: Cross multiply
    396,485.59x = 547,150.88 × 235,372.95
  4. Step 4: Simplify right side
    396,485.59x = 128,784,516,720.70
  5. Step 5: Solve for x
    x = 128,784,516,720.70/396,485.59
  6. Step 6: Final answer
    x = 324,815.13

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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.