Home / 327,685.10-491,718.69-138,133.85

Finding the Fourth Proportional to 327,685.10, 491,718.69 and 138,133.85

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Solution

The fourth proportional to 327,685.10, 491,718.69 and 138,133.85 is: 207,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,685.10 : 491,718.69 = 138,133.85 : x
  2. Step 2: Convert to fraction form
    327,685.10/491,718.69 = 138,133.85/x
  3. Step 3: Cross multiply
    327,685.10x = 491,718.69 × 138,133.85
  4. Step 4: Simplify right side
    327,685.10x = 67,922,993,308.06
  5. Step 5: Solve for x
    x = 67,922,993,308.06/327,685.10
  6. Step 6: Final answer
    x = 207,281.30

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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.