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Finding the Fourth Proportional to 198,292, 273,647.28 and 108,868

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Solution

The fourth proportional to 198,292, 273,647.28 and 108,868 is: 150,240.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,292 : 273,647.28 = 108,868 : x
  2. Step 2: Convert to fraction form
    198,292/273,647.28 = 108,868/x
  3. Step 3: Cross multiply
    198,292x = 273,647.28 × 108,868
  4. Step 4: Simplify right side
    198,292x = 29,791,432,079.04
  5. Step 5: Solve for x
    x = 29,791,432,079.04/198,292
  6. Step 6: Final answer
    x = 150,240.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.