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Finding the Fourth Proportional to 220,083.69, 330,147.41 and 79,853.25

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Solution

The fourth proportional to 220,083.69, 330,147.41 and 79,853.25 is: 119,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,083.69 : 330,147.41 = 79,853.25 : x
  2. Step 2: Convert to fraction form
    220,083.69/330,147.41 = 79,853.25/x
  3. Step 3: Cross multiply
    220,083.69x = 330,147.41 × 79,853.25
  4. Step 4: Simplify right side
    220,083.69x = 26,363,343,667.58
  5. Step 5: Solve for x
    x = 26,363,343,667.58/220,083.69
  6. Step 6: Final answer
    x = 119,787.81

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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.