Home / 419,211.12-628,255.80-205,651.92

Finding the Fourth Proportional to 419,211.12, 628,255.80 and 205,651.92

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Solution

The fourth proportional to 419,211.12, 628,255.80 and 205,651.92 is: 308,202.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,211.12 : 628,255.80 = 205,651.92 : x
  2. Step 2: Convert to fraction form
    419,211.12/628,255.80 = 205,651.92/x
  3. Step 3: Cross multiply
    419,211.12x = 628,255.80 × 205,651.92
  4. Step 4: Simplify right side
    419,211.12x = 129,202,011,521.14
  5. Step 5: Solve for x
    x = 129,202,011,521.14/419,211.12
  6. Step 6: Final answer
    x = 308,202.73

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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.