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Finding the Fourth Proportional to 324,033.82, 486,049.38 and 87,400.42

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Solution

The fourth proportional to 324,033.82, 486,049.38 and 87,400.42 is: 131,100.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,033.82 : 486,049.38 = 87,400.42 : x
  2. Step 2: Convert to fraction form
    324,033.82/486,049.38 = 87,400.42/x
  3. Step 3: Cross multiply
    324,033.82x = 486,049.38 × 87,400.42
  4. Step 4: Simplify right side
    324,033.82x = 42,480,919,952.74
  5. Step 5: Solve for x
    x = 42,480,919,952.74/324,033.82
  6. Step 6: Final answer
    x = 131,100.27

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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.