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Finding the Fourth Proportional to 220,085.44, 330,150.02 and 79,855

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Solution

The fourth proportional to 220,085.44, 330,150.02 and 79,855 is: 119,790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,085.44 : 330,150.02 = 79,855 : x
  2. Step 2: Convert to fraction form
    220,085.44/330,150.02 = 79,855/x
  3. Step 3: Cross multiply
    220,085.44x = 330,150.02 × 79,855
  4. Step 4: Simplify right side
    220,085.44x = 26,364,129,847.10
  5. Step 5: Solve for x
    x = 26,364,129,847.10/220,085.44
  6. Step 6: Final answer
    x = 119,790.43

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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.