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Finding the Fourth Proportional to 221,689.76, 332,583.84 and 63,905.90

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Solution

The fourth proportional to 221,689.76, 332,583.84 and 63,905.90 is: 95,873.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,689.76 : 332,583.84 = 63,905.90 : x
  2. Step 2: Convert to fraction form
    221,689.76/332,583.84 = 63,905.90/x
  3. Step 3: Cross multiply
    221,689.76x = 332,583.84 × 63,905.90
  4. Step 4: Simplify right side
    221,689.76x = 21,254,067,957.74
  5. Step 5: Solve for x
    x = 21,254,067,957.74/221,689.76
  6. Step 6: Final answer
    x = 95,873.03

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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.