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Finding the Fourth Proportional to 220,250.76, 330,362.72 and 78,103.04

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Solution

The fourth proportional to 220,250.76, 330,362.72 and 78,103.04 is: 117,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,250.76 : 330,362.72 = 78,103.04 : x
  2. Step 2: Convert to fraction form
    220,250.76/330,362.72 = 78,103.04/x
  3. Step 3: Cross multiply
    220,250.76x = 330,362.72 × 78,103.04
  4. Step 4: Simplify right side
    220,250.76x = 25,802,332,734.67
  5. Step 5: Solve for x
    x = 25,802,332,734.67/220,250.76
  6. Step 6: Final answer
    x = 117,149.80

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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.