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Finding the Fourth Proportional to 221,788.70, 332,245.65 and 132,777.80

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Solution

The fourth proportional to 221,788.70, 332,245.65 and 132,777.80 is: 198,904.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,788.70 : 332,245.65 = 132,777.80 : x
  2. Step 2: Convert to fraction form
    221,788.70/332,245.65 = 132,777.80/x
  3. Step 3: Cross multiply
    221,788.70x = 332,245.65 × 132,777.80
  4. Step 4: Simplify right side
    221,788.70x = 44,114,846,466.57
  5. Step 5: Solve for x
    x = 44,114,846,466.57/221,788.70
  6. Step 6: Final answer
    x = 198,904.84

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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.