Home / 521,716.20-782,282.70-222,145.80

Finding the Fourth Proportional to 521,716.20, 782,282.70 and 222,145.80

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Solution

The fourth proportional to 521,716.20, 782,282.70 and 222,145.80 is: 333,094.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,716.20 : 782,282.70 = 222,145.80 : x
  2. Step 2: Convert to fraction form
    521,716.20/782,282.70 = 222,145.80/x
  3. Step 3: Cross multiply
    521,716.20x = 782,282.70 × 222,145.80
  4. Step 4: Simplify right side
    521,716.20x = 173,780,816,217.66
  5. Step 5: Solve for x
    x = 173,780,816,217.66/521,716.20
  6. Step 6: Final answer
    x = 333,094.54

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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.