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Finding the Fourth Proportional to 220,546.60, 330,906.30 and 87,404.20

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Solution

The fourth proportional to 220,546.60, 330,906.30 and 87,404.20 is: 131,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,546.60 : 330,906.30 = 87,404.20 : x
  2. Step 2: Convert to fraction form
    220,546.60/330,906.30 = 87,404.20/x
  3. Step 3: Cross multiply
    220,546.60x = 330,906.30 × 87,404.20
  4. Step 4: Simplify right side
    220,546.60x = 28,922,600,426.46
  5. Step 5: Solve for x
    x = 28,922,600,426.46/220,546.60
  6. Step 6: Final answer
    x = 131,140.54

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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.