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Finding the Fourth Proportional to 247,805.75, 341,978.93 and 140,375.75

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Solution

The fourth proportional to 247,805.75, 341,978.93 and 140,375.75 is: 193,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,805.75 : 341,978.93 = 140,375.75 : x
  2. Step 2: Convert to fraction form
    247,805.75/341,978.93 = 140,375.75/x
  3. Step 3: Cross multiply
    247,805.75x = 341,978.93 × 140,375.75
  4. Step 4: Simplify right side
    247,805.75x = 48,005,548,782.95
  5. Step 5: Solve for x
    x = 48,005,548,782.95/247,805.75
  6. Step 6: Final answer
    x = 193,722.50

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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.