Home / 419,759.31-629,824.47-220,031.94

Finding the Fourth Proportional to 419,759.31, 629,824.47 and 220,031.94

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Solution

The fourth proportional to 419,759.31, 629,824.47 and 220,031.94 is: 330,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,759.31 : 629,824.47 = 220,031.94 : x
  2. Step 2: Convert to fraction form
    419,759.31/629,824.47 = 220,031.94/x
  3. Step 3: Cross multiply
    419,759.31x = 629,824.47 × 220,031.94
  4. Step 4: Simplify right side
    419,759.31x = 138,581,499,993.57
  5. Step 5: Solve for x
    x = 138,581,499,993.57/419,759.31
  6. Step 6: Final answer
    x = 330,145.15

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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.