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Finding the Fourth Proportional to 253,310.76, 349,579.14 and 140,131.56

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Solution

The fourth proportional to 253,310.76, 349,579.14 and 140,131.56 is: 193,387.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,310.76 : 349,579.14 = 140,131.56 : x
  2. Step 2: Convert to fraction form
    253,310.76/349,579.14 = 140,131.56/x
  3. Step 3: Cross multiply
    253,310.76x = 349,579.14 × 140,131.56
  4. Step 4: Simplify right side
    253,310.76x = 48,987,070,231.66
  5. Step 5: Solve for x
    x = 48,987,070,231.66/253,310.76
  6. Step 6: Final answer
    x = 193,387.25

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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.