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Finding the Fourth Proportional to 220,104.81, 330,288.57 and 79,874.37

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Solution

The fourth proportional to 220,104.81, 330,288.57 and 79,874.37 is: 119,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,104.81 : 330,288.57 = 79,874.37 : x
  2. Step 2: Convert to fraction form
    220,104.81/330,288.57 = 79,874.37/x
  3. Step 3: Cross multiply
    220,104.81x = 330,288.57 × 79,874.37
  4. Step 4: Simplify right side
    220,104.81x = 26,381,591,446.95
  5. Step 5: Solve for x
    x = 26,381,591,446.95/220,104.81
  6. Step 6: Final answer
    x = 119,859.22

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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.