Home / 419,724.63-629,772.80-219,997.53

Finding the Fourth Proportional to 419,724.63, 629,772.80 and 219,997.53

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Solution

The fourth proportional to 419,724.63, 629,772.80 and 219,997.53 is: 330,093.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,724.63 : 629,772.80 = 219,997.53 : x
  2. Step 2: Convert to fraction form
    419,724.63/629,772.80 = 219,997.53/x
  3. Step 3: Cross multiply
    419,724.63x = 629,772.80 × 219,997.53
  4. Step 4: Simplify right side
    419,724.63x = 138,548,459,361.20
  5. Step 5: Solve for x
    x = 138,548,459,361.20/419,724.63
  6. Step 6: Final answer
    x = 330,093.71

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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.