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Finding the Fourth Proportional to 275,080.97, 379,612.71 and 173,173.86

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Solution

The fourth proportional to 275,080.97, 379,612.71 and 173,173.86 is: 238,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,080.97 : 379,612.71 = 173,173.86 : x
  2. Step 2: Convert to fraction form
    275,080.97/379,612.71 = 173,173.86/x
  3. Step 3: Cross multiply
    275,080.97x = 379,612.71 × 173,173.86
  4. Step 4: Simplify right side
    275,080.97x = 65,738,998,295.76
  5. Step 5: Solve for x
    x = 65,738,998,295.76/275,080.97
  6. Step 6: Final answer
    x = 238,980.54

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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.