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Finding the Fourth Proportional to 327,711.40, 491,583.30 and 170,247.40

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Solution

The fourth proportional to 327,711.40, 491,583.30 and 170,247.40 is: 255,379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,711.40 : 491,583.30 = 170,247.40 : x
  2. Step 2: Convert to fraction form
    327,711.40/491,583.30 = 170,247.40/x
  3. Step 3: Cross multiply
    327,711.40x = 491,583.30 × 170,247.40
  4. Step 4: Simplify right side
    327,711.40x = 83,690,778,708.42
  5. Step 5: Solve for x
    x = 83,690,778,708.42/327,711.40
  6. Step 6: Final answer
    x = 255,379.52

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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.