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Finding the Fourth Proportional to 324,665.86, 486,736.53 and 135,268.87

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Solution

The fourth proportional to 324,665.86, 486,736.53 and 135,268.87 is: 202,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,665.86 : 486,736.53 = 135,268.87 : x
  2. Step 2: Convert to fraction form
    324,665.86/486,736.53 = 135,268.87/x
  3. Step 3: Cross multiply
    324,665.86x = 486,736.53 × 135,268.87
  4. Step 4: Simplify right side
    324,665.86x = 65,840,300,400.82
  5. Step 5: Solve for x
    x = 65,840,300,400.82/324,665.86
  6. Step 6: Final answer
    x = 202,794.04

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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.