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Finding the Fourth Proportional to 221,936.80, 332,905.20 and 88,880.80

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Solution

The fourth proportional to 221,936.80, 332,905.20 and 88,880.80 is: 133,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,936.80 : 332,905.20 = 88,880.80 : x
  2. Step 2: Convert to fraction form
    221,936.80/332,905.20 = 88,880.80/x
  3. Step 3: Cross multiply
    221,936.80x = 332,905.20 × 88,880.80
  4. Step 4: Simplify right side
    221,936.80x = 29,588,880,500.16
  5. Step 5: Solve for x
    x = 29,588,880,500.16/221,936.80
  6. Step 6: Final answer
    x = 133,321.20

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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.