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Finding the Fourth Proportional to 220,626.54, 330,649.01 and 87,434.13

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Solution

The fourth proportional to 220,626.54, 330,649.01 and 87,434.13 is: 131,035.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,626.54 : 330,649.01 = 87,434.13 : x
  2. Step 2: Convert to fraction form
    220,626.54/330,649.01 = 87,434.13/x
  3. Step 3: Cross multiply
    220,626.54x = 330,649.01 × 87,434.13
  4. Step 4: Simplify right side
    220,626.54x = 28,910,008,087.54
  5. Step 5: Solve for x
    x = 28,910,008,087.54/220,626.54
  6. Step 6: Final answer
    x = 131,035.95

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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.