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Finding the Fourth Proportional to 251,480.22, 347,049.27 and 138,305.94

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Solution

The fourth proportional to 251,480.22, 347,049.27 and 138,305.94 is: 190,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,480.22 : 347,049.27 = 138,305.94 : x
  2. Step 2: Convert to fraction form
    251,480.22/347,049.27 = 138,305.94/x
  3. Step 3: Cross multiply
    251,480.22x = 347,049.27 × 138,305.94
  4. Step 4: Simplify right side
    251,480.22x = 47,998,975,513.66
  5. Step 5: Solve for x
    x = 47,998,975,513.66/251,480.22
  6. Step 6: Final answer
    x = 190,865.81

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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.