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Finding the Fourth Proportional to 318,488.26, 477,806.20 and 108,126.20

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Solution

The fourth proportional to 318,488.26, 477,806.20 and 108,126.20 is: 162,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,488.26 : 477,806.20 = 108,126.20 : x
  2. Step 2: Convert to fraction form
    318,488.26/477,806.20 = 108,126.20/x
  3. Step 3: Cross multiply
    318,488.26x = 477,806.20 × 108,126.20
  4. Step 4: Simplify right side
    318,488.26x = 51,663,368,742.44
  5. Step 5: Solve for x
    x = 51,663,368,742.44/318,488.26
  6. Step 6: Final answer
    x = 162,214.36

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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.