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Finding the Fourth Proportional to 220,618.44, 330,861.90 and 80,344.26

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Solution

The fourth proportional to 220,618.44, 330,861.90 and 80,344.26 is: 120,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,618.44 : 330,861.90 = 80,344.26 : x
  2. Step 2: Convert to fraction form
    220,618.44/330,861.90 = 80,344.26/x
  3. Step 3: Cross multiply
    220,618.44x = 330,861.90 × 80,344.26
  4. Step 4: Simplify right side
    220,618.44x = 26,582,854,517.69
  5. Step 5: Solve for x
    x = 26,582,854,517.69/220,618.44
  6. Step 6: Final answer
    x = 120,492.44

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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.