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Finding the Fourth Proportional to 217,489.80, 326,234.70 and 194,680.20

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Solution

The fourth proportional to 217,489.80, 326,234.70 and 194,680.20 is: 292,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,489.80 : 326,234.70 = 194,680.20 : x
  2. Step 2: Convert to fraction form
    217,489.80/326,234.70 = 194,680.20/x
  3. Step 3: Cross multiply
    217,489.80x = 326,234.70 × 194,680.20
  4. Step 4: Simplify right side
    217,489.80x = 63,511,436,642.94
  5. Step 5: Solve for x
    x = 63,511,436,642.94/217,489.80
  6. Step 6: Final answer
    x = 292,020.30

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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.