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Finding the Fourth Proportional to 288,079.80, 397,572.76 and 159,043.92

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Solution

The fourth proportional to 288,079.80, 397,572.76 and 159,043.92 is: 219,493.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,079.80 : 397,572.76 = 159,043.92 : x
  2. Step 2: Convert to fraction form
    288,079.80/397,572.76 = 159,043.92/x
  3. Step 3: Cross multiply
    288,079.80x = 397,572.76 × 159,043.92
  4. Step 4: Simplify right side
    288,079.80x = 63,231,530,235.62
  5. Step 5: Solve for x
    x = 63,231,530,235.62/288,079.80
  6. Step 6: Final answer
    x = 219,493.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.