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Finding the Fourth Proportional to 327,751.71, 491,386.99 and 138,204.42

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Solution

The fourth proportional to 327,751.71, 491,386.99 and 138,204.42 is: 207,205.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,751.71 : 491,386.99 = 138,204.42 : x
  2. Step 2: Convert to fraction form
    327,751.71/491,386.99 = 138,204.42/x
  3. Step 3: Cross multiply
    327,751.71x = 491,386.99 × 138,204.42
  4. Step 4: Simplify right side
    327,751.71x = 67,911,853,948.50
  5. Step 5: Solve for x
    x = 67,911,853,948.50/327,751.71
  6. Step 6: Final answer
    x = 207,205.19

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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.