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Finding the Fourth Proportional to 274,508.88, 378,839.07 and 153,657.69

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Solution

The fourth proportional to 274,508.88, 378,839.07 and 153,657.69 is: 212,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,508.88 : 378,839.07 = 153,657.69 : x
  2. Step 2: Convert to fraction form
    274,508.88/378,839.07 = 153,657.69/x
  3. Step 3: Cross multiply
    274,508.88x = 378,839.07 × 153,657.69
  4. Step 4: Simplify right side
    274,508.88x = 58,211,536,377.95
  5. Step 5: Solve for x
    x = 58,211,536,377.95/274,508.88
  6. Step 6: Final answer
    x = 212,057.02

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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.