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Finding the Fourth Proportional to 324,765.40, 486,456.90 and 269,469.40

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Solution

The fourth proportional to 324,765.40, 486,456.90 and 269,469.40 is: 403,630.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,765.40 : 486,456.90 = 269,469.40 : x
  2. Step 2: Convert to fraction form
    324,765.40/486,456.90 = 269,469.40/x
  3. Step 3: Cross multiply
    324,765.40x = 486,456.90 × 269,469.40
  4. Step 4: Simplify right side
    324,765.40x = 131,085,248,968.86
  5. Step 5: Solve for x
    x = 131,085,248,968.86/324,765.40
  6. Step 6: Final answer
    x = 403,630.59

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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.