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Finding the Fourth Proportional to 251,974.82, 347,725.28 and 138,797.57

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Solution

The fourth proportional to 251,974.82, 347,725.28 and 138,797.57 is: 191,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,974.82 : 347,725.28 = 138,797.57 : x
  2. Step 2: Convert to fraction form
    251,974.82/347,725.28 = 138,797.57/x
  3. Step 3: Cross multiply
    251,974.82x = 347,725.28 × 138,797.57
  4. Step 4: Simplify right side
    251,974.82x = 48,263,423,891.57
  5. Step 5: Solve for x
    x = 48,263,423,891.57/251,974.82
  6. Step 6: Final answer
    x = 191,540.66

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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.