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Finding the Fourth Proportional to 221,718.28, 332,491.10 and 71,922.32

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Solution

The fourth proportional to 221,718.28, 332,491.10 and 71,922.32 is: 107,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,718.28 : 332,491.10 = 71,922.32 : x
  2. Step 2: Convert to fraction form
    221,718.28/332,491.10 = 71,922.32/x
  3. Step 3: Cross multiply
    221,718.28x = 332,491.10 × 71,922.32
  4. Step 4: Simplify right side
    221,718.28x = 23,913,531,291.35
  5. Step 5: Solve for x
    x = 23,913,531,291.35/221,718.28
  6. Step 6: Final answer
    x = 107,855.48

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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.