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Finding the Fourth Proportional to 324,331, 486,372.57 and 155,803.30

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Solution

The fourth proportional to 324,331, 486,372.57 and 155,803.30 is: 233,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,331 : 486,372.57 = 155,803.30 : x
  2. Step 2: Convert to fraction form
    324,331/486,372.57 = 155,803.30/x
  3. Step 3: Cross multiply
    324,331x = 486,372.57 × 155,803.30
  4. Step 4: Simplify right side
    324,331x = 75,778,451,435.48
  5. Step 5: Solve for x
    x = 75,778,451,435.48/324,331
  6. Step 6: Final answer
    x = 233,645.42

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1.5x scale

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.