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Finding the Fourth Proportional to 260,523.30, 389,618.55 and 218,532.90

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Solution

The fourth proportional to 260,523.30, 389,618.55 and 218,532.90 is: 326,820.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,523.30 : 389,618.55 = 218,532.90 : x
  2. Step 2: Convert to fraction form
    260,523.30/389,618.55 = 218,532.90/x
  3. Step 3: Cross multiply
    260,523.30x = 389,618.55 × 218,532.90
  4. Step 4: Simplify right side
    260,523.30x = 85,144,471,625.30
  5. Step 5: Solve for x
    x = 85,144,471,625.30/260,523.30
  6. Step 6: Final answer
    x = 326,820.95

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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.