Home / 418,629.20-627,943.80-222,021.20

Finding the Fourth Proportional to 418,629.20, 627,943.80 and 222,021.20

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Solution

The fourth proportional to 418,629.20, 627,943.80 and 222,021.20 is: 333,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,629.20 : 627,943.80 = 222,021.20 : x
  2. Step 2: Convert to fraction form
    418,629.20/627,943.80 = 222,021.20/x
  3. Step 3: Cross multiply
    418,629.20x = 627,943.80 × 222,021.20
  4. Step 4: Simplify right side
    418,629.20x = 139,416,836,008.56
  5. Step 5: Solve for x
    x = 139,416,836,008.56/418,629.20
  6. Step 6: Final answer
    x = 333,031.80

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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.