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Finding the Fourth Proportional to 324,109.86, 486,164.78 and 87,452.52

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Solution

The fourth proportional to 324,109.86, 486,164.78 and 87,452.52 is: 131,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,109.86 : 486,164.78 = 87,452.52 : x
  2. Step 2: Convert to fraction form
    324,109.86/486,164.78 = 87,452.52/x
  3. Step 3: Cross multiply
    324,109.86x = 486,164.78 × 87,452.52
  4. Step 4: Simplify right side
    324,109.86x = 42,516,335,146.25
  5. Step 5: Solve for x
    x = 42,516,335,146.25/324,109.86
  6. Step 6: Final answer
    x = 131,178.78

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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.