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Finding the Fourth Proportional to 220,922.70, 331,384.05 and 80,663.10

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Solution

The fourth proportional to 220,922.70, 331,384.05 and 80,663.10 is: 120,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,922.70 : 331,384.05 = 80,663.10 : x
  2. Step 2: Convert to fraction form
    220,922.70/331,384.05 = 80,663.10/x
  3. Step 3: Cross multiply
    220,922.70x = 331,384.05 × 80,663.10
  4. Step 4: Simplify right side
    220,922.70x = 26,730,464,763.56
  5. Step 5: Solve for x
    x = 26,730,464,763.56/220,922.70
  6. Step 6: Final answer
    x = 120,994.65

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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.