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Finding the Fourth Proportional to 218,281.85, 326,766.68 and 129,489.65

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Solution

The fourth proportional to 218,281.85, 326,766.68 and 129,489.65 is: 193,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,281.85 : 326,766.68 = 129,489.65 : x
  2. Step 2: Convert to fraction form
    218,281.85/326,766.68 = 129,489.65/x
  3. Step 3: Cross multiply
    218,281.85x = 326,766.68 × 129,489.65
  4. Step 4: Simplify right side
    218,281.85x = 42,312,902,377.41
  5. Step 5: Solve for x
    x = 42,312,902,377.41/218,281.85
  6. Step 6: Final answer
    x = 193,845.26

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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.