Home / 419,727.06-629,959.95-220,190.04

Finding the Fourth Proportional to 419,727.06, 629,959.95 and 220,190.04

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Solution

The fourth proportional to 419,727.06, 629,959.95 and 220,190.04 is: 330,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,727.06 : 629,959.95 = 220,190.04 : x
  2. Step 2: Convert to fraction form
    419,727.06/629,959.95 = 220,190.04/x
  3. Step 3: Cross multiply
    419,727.06x = 629,959.95 × 220,190.04
  4. Step 4: Simplify right side
    419,727.06x = 138,710,906,588.90
  5. Step 5: Solve for x
    x = 138,710,906,588.90/419,727.06
  6. Step 6: Final answer
    x = 330,478.83

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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.