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Finding the Fourth Proportional to 247,856.80, 342,042.74 and 140,434.11

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Solution

The fourth proportional to 247,856.80, 342,042.74 and 140,434.11 is: 193,799.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,856.80 : 342,042.74 = 140,434.11 : x
  2. Step 2: Convert to fraction form
    247,856.80/342,042.74 = 140,434.11/x
  3. Step 3: Cross multiply
    247,856.80x = 342,042.74 × 140,434.11
  4. Step 4: Simplify right side
    247,856.80x = 48,034,467,773.86
  5. Step 5: Solve for x
    x = 48,034,467,773.86/247,856.80
  6. Step 6: Final answer
    x = 193,799.27

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1.5x scale

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.