Home / 419,222.12-628,272.30-205,662.92

Finding the Fourth Proportional to 419,222.12, 628,272.30 and 205,662.92

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Solution

The fourth proportional to 419,222.12, 628,272.30 and 205,662.92 is: 308,219.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,222.12 : 628,272.30 = 205,662.92 : x
  2. Step 2: Convert to fraction form
    419,222.12/628,272.30 = 205,662.92/x
  3. Step 3: Cross multiply
    419,222.12x = 628,272.30 × 205,662.92
  4. Step 4: Simplify right side
    419,222.12x = 129,212,315,773.12
  5. Step 5: Solve for x
    x = 129,212,315,773.12/419,222.12
  6. Step 6: Final answer
    x = 308,219.22

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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.