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Finding the Fourth Proportional to 327,654.99, 491,673.58 and 138,103.79

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Solution

The fourth proportional to 327,654.99, 491,673.58 and 138,103.79 is: 207,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,654.99 : 491,673.58 = 138,103.79 : x
  2. Step 2: Convert to fraction form
    327,654.99/491,673.58 = 138,103.79/x
  3. Step 3: Cross multiply
    327,654.99x = 491,673.58 × 138,103.79
  4. Step 4: Simplify right side
    327,654.99x = 67,901,982,037.24
  5. Step 5: Solve for x
    x = 67,901,982,037.24/327,654.99
  6. Step 6: Final answer
    x = 207,236.22

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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.