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Finding the Fourth Proportional to 221,912.88, 332,703 and 72,063.60

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Solution

The fourth proportional to 221,912.88, 332,703 and 72,063.60 is: 108,041.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,912.88 : 332,703 = 72,063.60 : x
  2. Step 2: Convert to fraction form
    221,912.88/332,703 = 72,063.60/x
  3. Step 3: Cross multiply
    221,912.88x = 332,703 × 72,063.60
  4. Step 4: Simplify right side
    221,912.88x = 23,975,775,910.80
  5. Step 5: Solve for x
    x = 23,975,775,910.80/221,912.88
  6. Step 6: Final answer
    x = 108,041.39

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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.