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Finding the Fourth Proportional to 324,063.10, 486,094.65 and 279,739.90

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Solution

The fourth proportional to 324,063.10, 486,094.65 and 279,739.90 is: 419,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,063.10 : 486,094.65 = 279,739.90 : x
  2. Step 2: Convert to fraction form
    324,063.10/486,094.65 = 279,739.90/x
  3. Step 3: Cross multiply
    324,063.10x = 486,094.65 × 279,739.90
  4. Step 4: Simplify right side
    324,063.10x = 135,980,068,781.54
  5. Step 5: Solve for x
    x = 135,980,068,781.54/324,063.10
  6. Step 6: Final answer
    x = 419,609.85

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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.