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Finding the Fourth Proportional to 143,528.92, 215,301.12 and 43,692.28

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Solution

The fourth proportional to 143,528.92, 215,301.12 and 43,692.28 is: 65,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,528.92 : 215,301.12 = 43,692.28 : x
  2. Step 2: Convert to fraction form
    143,528.92/215,301.12 = 43,692.28/x
  3. Step 3: Cross multiply
    143,528.92x = 215,301.12 × 43,692.28
  4. Step 4: Simplify right side
    143,528.92x = 9,406,996,819.35
  5. Step 5: Solve for x
    x = 9,406,996,819.35/143,528.92
  6. Step 6: Final answer
    x = 65,540.78

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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.