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Finding the Fourth Proportional to 324,062.88, 486,092.88 and 87,429.60

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Solution

The fourth proportional to 324,062.88, 486,092.88 and 87,429.60 is: 131,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,062.88 : 486,092.88 = 87,429.60 : x
  2. Step 2: Convert to fraction form
    324,062.88/486,092.88 = 87,429.60/x
  3. Step 3: Cross multiply
    324,062.88x = 486,092.88 × 87,429.60
  4. Step 4: Simplify right side
    324,062.88x = 42,498,906,061.25
  5. Step 5: Solve for x
    x = 42,498,906,061.25/324,062.88
  6. Step 6: Final answer
    x = 131,144.01

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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.