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Finding the Fourth Proportional to 247,903.08, 342,099.18 and 140,507.88

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Solution

The fourth proportional to 247,903.08, 342,099.18 and 140,507.88 is: 193,896.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,903.08 : 342,099.18 = 140,507.88 : x
  2. Step 2: Convert to fraction form
    247,903.08/342,099.18 = 140,507.88/x
  3. Step 3: Cross multiply
    247,903.08x = 342,099.18 × 140,507.88
  4. Step 4: Simplify right side
    247,903.08x = 48,067,630,531.54
  5. Step 5: Solve for x
    x = 48,067,630,531.54/247,903.08
  6. Step 6: Final answer
    x = 193,896.87

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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.