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Finding the Fourth Proportional to 408,489.50, 612,738.70 and 124,226.27

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Solution

The fourth proportional to 408,489.50, 612,738.70 and 124,226.27 is: 186,340.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,489.50 : 612,738.70 = 124,226.27 : x
  2. Step 2: Convert to fraction form
    408,489.50/612,738.70 = 124,226.27/x
  3. Step 3: Cross multiply
    408,489.50x = 612,738.70 × 124,226.27
  4. Step 4: Simplify right side
    408,489.50x = 76,118,245,905.20
  5. Step 5: Solve for x
    x = 76,118,245,905.20/408,489.50
  6. Step 6: Final answer
    x = 186,340.77

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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.