Home / 327,905.10-491,931.68-100,221.39

Finding the Fourth Proportional to 327,905.10, 491,931.68 and 100,221.39

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Solution

The fourth proportional to 327,905.10, 491,931.68 and 100,221.39 is: 150,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,905.10 : 491,931.68 = 100,221.39 : x
  2. Step 2: Convert to fraction form
    327,905.10/491,931.68 = 100,221.39/x
  3. Step 3: Cross multiply
    327,905.10x = 491,931.68 × 100,221.39
  4. Step 4: Simplify right side
    327,905.10x = 49,302,076,253.53
  5. Step 5: Solve for x
    x = 49,302,076,253.53/327,905.10
  6. Step 6: Final answer
    x = 150,354.71

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1.5x scale

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.