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Finding the Fourth Proportional to 251,608, 347,219.04 and 138,434.80

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Solution

The fourth proportional to 251,608, 347,219.04 and 138,434.80 is: 191,040.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,608 : 347,219.04 = 138,434.80 : x
  2. Step 2: Convert to fraction form
    251,608/347,219.04 = 138,434.80/x
  3. Step 3: Cross multiply
    251,608x = 347,219.04 × 138,434.80
  4. Step 4: Simplify right side
    251,608x = 48,067,198,358.59
  5. Step 5: Solve for x
    x = 48,067,198,358.59/251,608
  6. Step 6: Final answer
    x = 191,040.02

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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.