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Finding the Fourth Proportional to 324,062.10, 486,093.15 and 279,738.90

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Solution

The fourth proportional to 324,062.10, 486,093.15 and 279,738.90 is: 419,608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,062.10 : 486,093.15 = 279,738.90 : x
  2. Step 2: Convert to fraction form
    324,062.10/486,093.15 = 279,738.90/x
  3. Step 3: Cross multiply
    324,062.10x = 486,093.15 × 279,738.90
  4. Step 4: Simplify right side
    324,062.10x = 135,979,163,078.54
  5. Step 5: Solve for x
    x = 135,979,163,078.54/324,062.10
  6. Step 6: Final answer
    x = 419,608.35

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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.