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Finding the Fourth Proportional to 220,379.75, 330,290.78 and 108,033.56

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Solution

The fourth proportional to 220,379.75, 330,290.78 and 108,033.56 is: 161,913.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,379.75 : 330,290.78 = 108,033.56 : x
  2. Step 2: Convert to fraction form
    220,379.75/330,290.78 = 108,033.56/x
  3. Step 3: Cross multiply
    220,379.75x = 330,290.78 × 108,033.56
  4. Step 4: Simplify right side
    220,379.75x = 35,682,486,606.96
  5. Step 5: Solve for x
    x = 35,682,486,606.96/220,379.75
  6. Step 6: Final answer
    x = 161,913.64

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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.