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Finding the Fourth Proportional to 198,354, 273,728.52 and 108,930

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Solution

The fourth proportional to 198,354, 273,728.52 and 108,930 is: 150,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,354 : 273,728.52 = 108,930 : x
  2. Step 2: Convert to fraction form
    198,354/273,728.52 = 108,930/x
  3. Step 3: Cross multiply
    198,354x = 273,728.52 × 108,930
  4. Step 4: Simplify right side
    198,354x = 29,817,247,683.60
  5. Step 5: Solve for x
    x = 29,817,247,683.60/198,354
  6. Step 6: Final answer
    x = 150,323.40

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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.