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Finding the Fourth Proportional to 324,066.60, 486,099.90 and 279,743.40

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Solution

The fourth proportional to 324,066.60, 486,099.90 and 279,743.40 is: 419,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,066.60 : 486,099.90 = 279,743.40 : x
  2. Step 2: Convert to fraction form
    324,066.60/486,099.90 = 279,743.40/x
  3. Step 3: Cross multiply
    324,066.60x = 486,099.90 × 279,743.40
  4. Step 4: Simplify right side
    324,066.60x = 135,983,238,765.66
  5. Step 5: Solve for x
    x = 135,983,238,765.66/324,066.60
  6. Step 6: Final answer
    x = 419,615.10

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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.