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Finding the Fourth Proportional to 251,659.01, 347,289.30 and 138,481.76

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Solution

The fourth proportional to 251,659.01, 347,289.30 and 138,481.76 is: 191,104.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,659.01 : 347,289.30 = 138,481.76 : x
  2. Step 2: Convert to fraction form
    251,659.01/347,289.30 = 138,481.76/x
  3. Step 3: Cross multiply
    251,659.01x = 347,289.30 × 138,481.76
  4. Step 4: Simplify right side
    251,659.01x = 48,093,233,493.17
  5. Step 5: Solve for x
    x = 48,093,233,493.17/251,659.01
  6. Step 6: Final answer
    x = 191,104.76

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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.