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Finding the Fourth Proportional to 318,246.72, 477,101.97 and 138,196.68

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Solution

The fourth proportional to 318,246.72, 477,101.97 and 138,196.68 is: 207,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,246.72 : 477,101.97 = 138,196.68 : x
  2. Step 2: Convert to fraction form
    318,246.72/477,101.97 = 138,196.68/x
  3. Step 3: Cross multiply
    318,246.72x = 477,101.97 × 138,196.68
  4. Step 4: Simplify right side
    318,246.72x = 65,933,908,275.46
  5. Step 5: Solve for x
    x = 65,933,908,275.46/318,246.72
  6. Step 6: Final answer
    x = 207,178.59

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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.