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Finding the Fourth Proportional to 220,807.14, 331,216.17 and 80,565.75

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Solution

The fourth proportional to 220,807.14, 331,216.17 and 80,565.75 is: 120,850.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,807.14 : 331,216.17 = 80,565.75 : x
  2. Step 2: Convert to fraction form
    220,807.14/331,216.17 = 80,565.75/x
  3. Step 3: Cross multiply
    220,807.14x = 331,216.17 × 80,565.75
  4. Step 4: Simplify right side
    220,807.14x = 26,684,679,148.18
  5. Step 5: Solve for x
    x = 26,684,679,148.18/220,807.14
  6. Step 6: Final answer
    x = 120,850.62

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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.