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Finding the Fourth Proportional to 410,131.20, 614,620.80 and 326,035.20

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Solution

The fourth proportional to 410,131.20, 614,620.80 and 326,035.20 is: 488,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,131.20 : 614,620.80 = 326,035.20 : x
  2. Step 2: Convert to fraction form
    410,131.20/614,620.80 = 326,035.20/x
  3. Step 3: Cross multiply
    410,131.20x = 614,620.80 × 326,035.20
  4. Step 4: Simplify right side
    410,131.20x = 200,388,015,452.16
  5. Step 5: Solve for x
    x = 200,388,015,452.16/410,131.20
  6. Step 6: Final answer
    x = 488,594.91

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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.