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Finding the Fourth Proportional to 220,807.05, 331,259.45 and 80,565.27

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Solution

The fourth proportional to 220,807.05, 331,259.45 and 80,565.27 is: 120,865.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,807.05 : 331,259.45 = 80,565.27 : x
  2. Step 2: Convert to fraction form
    220,807.05/331,259.45 = 80,565.27/x
  3. Step 3: Cross multiply
    220,807.05x = 331,259.45 × 80,565.27
  4. Step 4: Simplify right side
    220,807.05x = 26,688,006,626.48
  5. Step 5: Solve for x
    x = 26,688,006,626.48/220,807.05
  6. Step 6: Final answer
    x = 120,865.74

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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.