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Finding the Fourth Proportional to 251,888.44, 347,608.40 and 138,712

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Solution

The fourth proportional to 251,888.44, 347,608.40 and 138,712 is: 191,423.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,888.44 : 347,608.40 = 138,712 : x
  2. Step 2: Convert to fraction form
    251,888.44/347,608.40 = 138,712/x
  3. Step 3: Cross multiply
    251,888.44x = 347,608.40 × 138,712
  4. Step 4: Simplify right side
    251,888.44x = 48,217,456,380.80
  5. Step 5: Solve for x
    x = 48,217,456,380.80/251,888.44
  6. Step 6: Final answer
    x = 191,423.86

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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.