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Finding the Fourth Proportional to 318,246.22, 477,101.22 and 138,196.18

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Solution

The fourth proportional to 318,246.22, 477,101.22 and 138,196.18 is: 207,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,246.22 : 477,101.22 = 138,196.18 : x
  2. Step 2: Convert to fraction form
    318,246.22/477,101.22 = 138,196.18/x
  3. Step 3: Cross multiply
    318,246.22x = 477,101.22 × 138,196.18
  4. Step 4: Simplify right side
    318,246.22x = 65,933,566,077.34
  5. Step 5: Solve for x
    x = 65,933,566,077.34/318,246.22
  6. Step 6: Final answer
    x = 207,177.85

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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.