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Finding the Fourth Proportional to 408,252.96, 611,069.22 and 218,238.30

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Solution

The fourth proportional to 408,252.96, 611,069.22 and 218,238.30 is: 326,657.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,252.96 : 611,069.22 = 218,238.30 : x
  2. Step 2: Convert to fraction form
    408,252.96/611,069.22 = 218,238.30/x
  3. Step 3: Cross multiply
    408,252.96x = 611,069.22 × 218,238.30
  4. Step 4: Simplify right side
    408,252.96x = 133,358,707,755.13
  5. Step 5: Solve for x
    x = 133,358,707,755.13/408,252.96
  6. Step 6: Final answer
    x = 326,657.05

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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.