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Finding the Fourth Proportional to 396,635.08, 595,189.02 and 143,935.30

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Solution

The fourth proportional to 396,635.08, 595,189.02 and 143,935.30 is: 215,988.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,635.08 : 595,189.02 = 143,935.30 : x
  2. Step 2: Convert to fraction form
    396,635.08/595,189.02 = 143,935.30/x
  3. Step 3: Cross multiply
    396,635.08x = 595,189.02 × 143,935.30
  4. Step 4: Simplify right side
    396,635.08x = 85,668,710,150.41
  5. Step 5: Solve for x
    x = 85,668,710,150.41/396,635.08
  6. Step 6: Final answer
    x = 215,988.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.