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Finding the Fourth Proportional to 220,635.27, 330,886.94 and 80,361.09

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Solution

The fourth proportional to 220,635.27, 330,886.94 and 80,361.09 is: 120,517.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,635.27 : 330,886.94 = 80,361.09 : x
  2. Step 2: Convert to fraction form
    220,635.27/330,886.94 = 80,361.09/x
  3. Step 3: Cross multiply
    220,635.27x = 330,886.94 × 80,361.09
  4. Step 4: Simplify right side
    220,635.27x = 26,590,434,763.36
  5. Step 5: Solve for x
    x = 26,590,434,763.36/220,635.27
  6. Step 6: Final answer
    x = 120,517.61

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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.