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Finding the Fourth Proportional to 220,167.81, 330,147.60 and 85,295.04

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Solution

The fourth proportional to 220,167.81, 330,147.60 and 85,295.04 is: 127,902.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,167.81 : 330,147.60 = 85,295.04 : x
  2. Step 2: Convert to fraction form
    220,167.81/330,147.60 = 85,295.04/x
  3. Step 3: Cross multiply
    220,167.81x = 330,147.60 × 85,295.04
  4. Step 4: Simplify right side
    220,167.81x = 28,159,952,747.90
  5. Step 5: Solve for x
    x = 28,159,952,747.90/220,167.81
  6. Step 6: Final answer
    x = 127,902.22

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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.