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Finding the Fourth Proportional to 221,720.79, 332,568.88 and 197,043.22

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Solution

The fourth proportional to 221,720.79, 332,568.88 and 197,043.22 is: 295,553.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,720.79 : 332,568.88 = 197,043.22 : x
  2. Step 2: Convert to fraction form
    221,720.79/332,568.88 = 197,043.22/x
  3. Step 3: Cross multiply
    221,720.79x = 332,568.88 × 197,043.22
  4. Step 4: Simplify right side
    221,720.79x = 65,530,442,986.99
  5. Step 5: Solve for x
    x = 65,530,442,986.99/221,720.79
  6. Step 6: Final answer
    x = 295,553.89

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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.