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Finding the Fourth Proportional to 502,162.20, 753,170.40 and 147,139.20

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Solution

The fourth proportional to 502,162.20, 753,170.40 and 147,139.20 is: 220,687.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,162.20 : 753,170.40 = 147,139.20 : x
  2. Step 2: Convert to fraction form
    502,162.20/753,170.40 = 147,139.20/x
  3. Step 3: Cross multiply
    502,162.20x = 753,170.40 × 147,139.20
  4. Step 4: Simplify right side
    502,162.20x = 110,820,890,119.68
  5. Step 5: Solve for x
    x = 110,820,890,119.68/502,162.20
  6. Step 6: Final answer
    x = 220,687.44

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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.