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Finding the Fourth Proportional to 408,108.77, 612,164.60 and 123,801.81

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Solution

The fourth proportional to 408,108.77, 612,164.60 and 123,801.81 is: 185,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,108.77 : 612,164.60 = 123,801.81 : x
  2. Step 2: Convert to fraction form
    408,108.77/612,164.60 = 123,801.81/x
  3. Step 3: Cross multiply
    408,108.77x = 612,164.60 × 123,801.81
  4. Step 4: Simplify right side
    408,108.77x = 75,787,085,497.93
  5. Step 5: Solve for x
    x = 75,787,085,497.93/408,108.77
  6. Step 6: Final answer
    x = 185,703.15

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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.