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Finding the Fourth Proportional to 275,079.97, 379,611.33 and 173,172.86

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Solution

The fourth proportional to 275,079.97, 379,611.33 and 173,172.86 is: 238,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,079.97 : 379,611.33 = 173,172.86 : x
  2. Step 2: Convert to fraction form
    275,079.97/379,611.33 = 173,172.86/x
  3. Step 3: Cross multiply
    275,079.97x = 379,611.33 × 173,172.86
  4. Step 4: Simplify right side
    275,079.97x = 65,738,378,580.59
  5. Step 5: Solve for x
    x = 65,738,378,580.59/275,079.97
  6. Step 6: Final answer
    x = 238,979.15

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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.