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Finding the Fourth Proportional to 408,489.83, 612,739.19 and 124,226.60

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Solution

The fourth proportional to 408,489.83, 612,739.19 and 124,226.60 is: 186,341.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,489.83 : 612,739.19 = 124,226.60 : x
  2. Step 2: Convert to fraction form
    408,489.83/612,739.19 = 124,226.60/x
  3. Step 3: Cross multiply
    408,489.83x = 612,739.19 × 124,226.60
  4. Step 4: Simplify right side
    408,489.83x = 76,118,508,102.87
  5. Step 5: Solve for x
    x = 76,118,508,102.87/408,489.83
  6. Step 6: Final answer
    x = 186,341.26

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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.