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Finding the Fourth Proportional to 251,951.88, 347,693.54 and 138,774.63

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Solution

The fourth proportional to 251,951.88, 347,693.54 and 138,774.63 is: 191,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,951.88 : 347,693.54 = 138,774.63 : x
  2. Step 2: Convert to fraction form
    251,951.88/347,693.54 = 138,774.63/x
  3. Step 3: Cross multiply
    251,951.88x = 347,693.54 × 138,774.63
  4. Step 4: Simplify right side
    251,951.88x = 48,251,043,583.06
  5. Step 5: Solve for x
    x = 48,251,043,583.06/251,951.88
  6. Step 6: Final answer
    x = 191,508.96

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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.