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Finding the Fourth Proportional to 455,194.60, 682,791.90 and 218,998.60

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Solution

The fourth proportional to 455,194.60, 682,791.90 and 218,998.60 is: 328,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,194.60 : 682,791.90 = 218,998.60 : x
  2. Step 2: Convert to fraction form
    455,194.60/682,791.90 = 218,998.60/x
  3. Step 3: Cross multiply
    455,194.60x = 682,791.90 × 218,998.60
  4. Step 4: Simplify right side
    455,194.60x = 149,530,470,191.34
  5. Step 5: Solve for x
    x = 149,530,470,191.34/455,194.60
  6. Step 6: Final answer
    x = 328,497.90

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Similar ratio
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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.