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Finding the Fourth Proportional to 253,144.41, 349,335.45 and 138,423.42

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Solution

The fourth proportional to 253,144.41, 349,335.45 and 138,423.42 is: 191,022.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,144.41 : 349,335.45 = 138,423.42 : x
  2. Step 2: Convert to fraction form
    253,144.41/349,335.45 = 138,423.42/x
  3. Step 3: Cross multiply
    253,144.41x = 349,335.45 × 138,423.42
  4. Step 4: Simplify right side
    253,144.41x = 48,356,207,716.24
  5. Step 5: Solve for x
    x = 48,356,207,716.24/253,144.41
  6. Step 6: Final answer
    x = 191,022.22

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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.