Home / 318,498.26-477,821.20-108,136.20

Finding the Fourth Proportional to 318,498.26, 477,821.20 and 108,136.20

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Solution

The fourth proportional to 318,498.26, 477,821.20 and 108,136.20 is: 162,229.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,498.26 : 477,821.20 = 108,136.20 : x
  2. Step 2: Convert to fraction form
    318,498.26/477,821.20 = 108,136.20/x
  3. Step 3: Cross multiply
    318,498.26x = 477,821.20 × 108,136.20
  4. Step 4: Simplify right side
    318,498.26x = 51,669,768,847.44
  5. Step 5: Solve for x
    x = 51,669,768,847.44/318,498.26
  6. Step 6: Final answer
    x = 162,229.36

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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.