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Finding the Fourth Proportional to 220,508.96, 330,841.19 and 80,281.76

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Solution

The fourth proportional to 220,508.96, 330,841.19 and 80,281.76 is: 120,450.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,508.96 : 330,841.19 = 80,281.76 : x
  2. Step 2: Convert to fraction form
    220,508.96/330,841.19 = 80,281.76/x
  3. Step 3: Cross multiply
    220,508.96x = 330,841.19 × 80,281.76
  4. Step 4: Simplify right side
    220,508.96x = 26,560,510,958.08
  5. Step 5: Solve for x
    x = 26,560,510,958.08/220,508.96
  6. Step 6: Final answer
    x = 120,450.94

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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.