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Finding the Fourth Proportional to 251,805.71, 347,480.56 and 137,081.42

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Solution

The fourth proportional to 251,805.71, 347,480.56 and 137,081.42 is: 189,166.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,805.71 : 347,480.56 = 137,081.42 : x
  2. Step 2: Convert to fraction form
    251,805.71/347,480.56 = 137,081.42/x
  3. Step 3: Cross multiply
    251,805.71x = 347,480.56 × 137,081.42
  4. Step 4: Simplify right side
    251,805.71x = 47,633,126,649.80
  5. Step 5: Solve for x
    x = 47,633,126,649.80/251,805.71
  6. Step 6: Final answer
    x = 189,166.19

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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.