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Finding the Fourth Proportional to 247,390, 341,398.86 and 134,212.75

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Solution

The fourth proportional to 247,390, 341,398.86 and 134,212.75 is: 185,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,390 : 341,398.86 = 134,212.75 : x
  2. Step 2: Convert to fraction form
    247,390/341,398.86 = 134,212.75/x
  3. Step 3: Cross multiply
    247,390x = 341,398.86 × 134,212.75
  4. Step 4: Simplify right side
    247,390x = 45,820,079,847.47
  5. Step 5: Solve for x
    x = 45,820,079,847.47/247,390
  6. Step 6: Final answer
    x = 185,213.95

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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.