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Finding the Fourth Proportional to 274,797.72, 379,276.11 and 187,815.06

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Solution

The fourth proportional to 274,797.72, 379,276.11 and 187,815.06 is: 259,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,797.72 : 379,276.11 = 187,815.06 : x
  2. Step 2: Convert to fraction form
    274,797.72/379,276.11 = 187,815.06/x
  3. Step 3: Cross multiply
    274,797.72x = 379,276.11 × 187,815.06
  4. Step 4: Simplify right side
    274,797.72x = 71,233,765,356.22
  5. Step 5: Solve for x
    x = 71,233,765,356.22/274,797.72
  6. Step 6: Final answer
    x = 259,222.55

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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.