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Finding the Fourth Proportional to 220,798.68, 331,247.28 and 80,557.32

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Solution

The fourth proportional to 220,798.68, 331,247.28 and 80,557.32 is: 120,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,798.68 : 331,247.28 = 80,557.32 : x
  2. Step 2: Convert to fraction form
    220,798.68/331,247.28 = 80,557.32/x
  3. Step 3: Cross multiply
    220,798.68x = 331,247.28 × 80,557.32
  4. Step 4: Simplify right side
    220,798.68x = 26,684,393,134.09
  5. Step 5: Solve for x
    x = 26,684,393,134.09/220,798.68
  6. Step 6: Final answer
    x = 120,853.95

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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.