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Finding the Fourth Proportional to 408,108.68, 612,162.21 and 108,589.25

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Solution

The fourth proportional to 408,108.68, 612,162.21 and 108,589.25 is: 162,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,108.68 : 612,162.21 = 108,589.25 : x
  2. Step 2: Convert to fraction form
    408,108.68/612,162.21 = 108,589.25/x
  3. Step 3: Cross multiply
    408,108.68x = 612,162.21 × 108,589.25
  4. Step 4: Simplify right side
    408,108.68x = 66,474,232,201.43
  5. Step 5: Solve for x
    x = 66,474,232,201.43/408,108.68
  6. Step 6: Final answer
    x = 162,883.65

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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.