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Finding the Fourth Proportional to 408,189.71, 612,285.88 and 123,882.68

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Solution

The fourth proportional to 408,189.71, 612,285.88 and 123,882.68 is: 185,824.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,189.71 : 612,285.88 = 123,882.68 : x
  2. Step 2: Convert to fraction form
    408,189.71/612,285.88 = 123,882.68/x
  3. Step 3: Cross multiply
    408,189.71x = 612,285.88 × 123,882.68
  4. Step 4: Simplify right side
    408,189.71x = 75,851,612,059.72
  5. Step 5: Solve for x
    x = 75,851,612,059.72/408,189.71
  6. Step 6: Final answer
    x = 185,824.41

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1.5x scale

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.