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Finding the Fourth Proportional to 408,489.08, 612,738.07 and 124,225.85

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Solution

The fourth proportional to 408,489.08, 612,738.07 and 124,225.85 is: 186,340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,489.08 : 612,738.07 = 124,225.85 : x
  2. Step 2: Convert to fraction form
    408,489.08/612,738.07 = 124,225.85/x
  3. Step 3: Cross multiply
    408,489.08x = 612,738.07 × 124,225.85
  4. Step 4: Simplify right side
    408,489.08x = 76,117,908,794.39
  5. Step 5: Solve for x
    x = 76,117,908,794.39/408,489.08
  6. Step 6: Final answer
    x = 186,340.13

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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.