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Finding the Fourth Proportional to 458,523.40, 687,785.10 and 192,195.40

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Solution

The fourth proportional to 458,523.40, 687,785.10 and 192,195.40 is: 288,293.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,523.40 : 687,785.10 = 192,195.40 : x
  2. Step 2: Convert to fraction form
    458,523.40/687,785.10 = 192,195.40/x
  3. Step 3: Cross multiply
    458,523.40x = 687,785.10 × 192,195.40
  4. Step 4: Simplify right side
    458,523.40x = 132,189,132,408.54
  5. Step 5: Solve for x
    x = 132,189,132,408.54/458,523.40
  6. Step 6: Final answer
    x = 288,293.10

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Similar ratio
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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.