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Finding the Fourth Proportional to 324,171.58, 486,219.09 and 87,532.72

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Solution

The fourth proportional to 324,171.58, 486,219.09 and 87,532.72 is: 131,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,171.58 : 486,219.09 = 87,532.72 : x
  2. Step 2: Convert to fraction form
    324,171.58/486,219.09 = 87,532.72/x
  3. Step 3: Cross multiply
    324,171.58x = 486,219.09 × 87,532.72
  4. Step 4: Simplify right side
    324,171.58x = 42,560,079,463.62
  5. Step 5: Solve for x
    x = 42,560,079,463.62/324,171.58
  6. Step 6: Final answer
    x = 131,288.74

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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.