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Finding the Fourth Proportional to 220,793.40, 331,214.40 and 71,008.20

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Solution

The fourth proportional to 220,793.40, 331,214.40 and 71,008.20 is: 106,520.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,793.40 : 331,214.40 = 71,008.20 : x
  2. Step 2: Convert to fraction form
    220,793.40/331,214.40 = 71,008.20/x
  3. Step 3: Cross multiply
    220,793.40x = 331,214.40 × 71,008.20
  4. Step 4: Simplify right side
    220,793.40x = 23,518,938,358.08
  5. Step 5: Solve for x
    x = 23,518,938,358.08/220,793.40
  6. Step 6: Final answer
    x = 106,520.11

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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.