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Finding the Fourth Proportional to 275,118.86, 379,489.29 and 198,750.19

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Solution

The fourth proportional to 275,118.86, 379,489.29 and 198,750.19 is: 274,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,118.86 : 379,489.29 = 198,750.19 : x
  2. Step 2: Convert to fraction form
    275,118.86/379,489.29 = 198,750.19/x
  3. Step 3: Cross multiply
    275,118.86x = 379,489.29 × 198,750.19
  4. Step 4: Simplify right side
    275,118.86x = 75,423,568,490.47
  5. Step 5: Solve for x
    x = 75,423,568,490.47/275,118.86
  6. Step 6: Final answer
    x = 274,149.03

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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.