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Finding the Fourth Proportional to 408,379.92, 612,599.07 and 108,858.96

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Solution

The fourth proportional to 408,379.92, 612,599.07 and 108,858.96 is: 163,296.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,379.92 : 612,599.07 = 108,858.96 : x
  2. Step 2: Convert to fraction form
    408,379.92/612,599.07 = 108,858.96/x
  3. Step 3: Cross multiply
    408,379.92x = 612,599.07 × 108,858.96
  4. Step 4: Simplify right side
    408,379.92x = 66,686,897,657.17
  5. Step 5: Solve for x
    x = 66,686,897,657.17/408,379.92
  6. Step 6: Final answer
    x = 163,296.22

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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.