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Finding the Fourth Proportional to 324,362.20, 486,542.10 and 87,704.86

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Solution

The fourth proportional to 324,362.20, 486,542.10 and 87,704.86 is: 131,556.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,362.20 : 486,542.10 = 87,704.86 : x
  2. Step 2: Convert to fraction form
    324,362.20/486,542.10 = 87,704.86/x
  3. Step 3: Cross multiply
    324,362.20x = 486,542.10 × 87,704.86
  4. Step 4: Simplify right side
    324,362.20x = 42,672,106,764.61
  5. Step 5: Solve for x
    x = 42,672,106,764.61/324,362.20
  6. Step 6: Final answer
    x = 131,556.97

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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.