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Finding the Fourth Proportional to 318,494.26, 477,815.20 and 108,132.20

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Solution

The fourth proportional to 318,494.26, 477,815.20 and 108,132.20 is: 162,223.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,494.26 : 477,815.20 = 108,132.20 : x
  2. Step 2: Convert to fraction form
    318,494.26/477,815.20 = 108,132.20/x
  3. Step 3: Cross multiply
    318,494.26x = 477,815.20 × 108,132.20
  4. Step 4: Simplify right side
    318,494.26x = 51,667,208,769.44
  5. Step 5: Solve for x
    x = 51,667,208,769.44/318,494.26
  6. Step 6: Final answer
    x = 162,223.36

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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.