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Finding the Fourth Proportional to 324,744.20, 487,029.90 and 100,104.20

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Solution

The fourth proportional to 324,744.20, 487,029.90 and 100,104.20 is: 150,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,744.20 : 487,029.90 = 100,104.20 : x
  2. Step 2: Convert to fraction form
    324,744.20/487,029.90 = 100,104.20/x
  3. Step 3: Cross multiply
    324,744.20x = 487,029.90 × 100,104.20
  4. Step 4: Simplify right side
    324,744.20x = 48,753,738,515.58
  5. Step 5: Solve for x
    x = 48,753,738,515.58/324,744.20
  6. Step 6: Final answer
    x = 150,129.67

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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.