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Finding the Fourth Proportional to 408,157.99, 612,238.30 and 123,850.92

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Solution

The fourth proportional to 408,157.99, 612,238.30 and 123,850.92 is: 185,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,157.99 : 612,238.30 = 123,850.92 : x
  2. Step 2: Convert to fraction form
    408,157.99/612,238.30 = 123,850.92/x
  3. Step 3: Cross multiply
    408,157.99x = 612,238.30 × 123,850.92
  4. Step 4: Simplify right side
    408,157.99x = 75,826,278,700.50
  5. Step 5: Solve for x
    x = 75,826,278,700.50/408,157.99
  6. Step 6: Final answer
    x = 185,776.79

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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.