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Finding the Fourth Proportional to 311,398.43, 467,025.95 and 121,863.29

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Solution

The fourth proportional to 311,398.43, 467,025.95 and 121,863.29 is: 182,766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,398.43 : 467,025.95 = 121,863.29 : x
  2. Step 2: Convert to fraction form
    311,398.43/467,025.95 = 121,863.29/x
  3. Step 3: Cross multiply
    311,398.43x = 467,025.95 × 121,863.29
  4. Step 4: Simplify right side
    311,398.43x = 56,913,316,751.90
  5. Step 5: Solve for x
    x = 56,913,316,751.90/311,398.43
  6. Step 6: Final answer
    x = 182,766.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.