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Finding the Fourth Proportional to 220,578.56, 330,917.05 and 80,337.19

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Solution

The fourth proportional to 220,578.56, 330,917.05 and 80,337.19 is: 120,523.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,578.56 : 330,917.05 = 80,337.19 : x
  2. Step 2: Convert to fraction form
    220,578.56/330,917.05 = 80,337.19/x
  3. Step 3: Cross multiply
    220,578.56x = 330,917.05 × 80,337.19
  4. Step 4: Simplify right side
    220,578.56x = 26,584,945,193.22
  5. Step 5: Solve for x
    x = 26,584,945,193.22/220,578.56
  6. Step 6: Final answer
    x = 120,523.70

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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.