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Finding the Fourth Proportional to 408,164.55, 612,248.04 and 123,857.39

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Solution

The fourth proportional to 408,164.55, 612,248.04 and 123,857.39 is: 185,786.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,164.55 : 612,248.04 = 123,857.39 : x
  2. Step 2: Convert to fraction form
    408,164.55/612,248.04 = 123,857.39/x
  3. Step 3: Cross multiply
    408,164.55x = 612,248.04 × 123,857.39
  4. Step 4: Simplify right side
    408,164.55x = 75,831,441,205.78
  5. Step 5: Solve for x
    x = 75,831,441,205.78/408,164.55
  6. Step 6: Final answer
    x = 185,786.45

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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.