Home / 419,220.12-628,269.30-205,660.92

Finding the Fourth Proportional to 419,220.12, 628,269.30 and 205,660.92

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Solution

The fourth proportional to 419,220.12, 628,269.30 and 205,660.92 is: 308,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,220.12 : 628,269.30 = 205,660.92 : x
  2. Step 2: Convert to fraction form
    419,220.12/628,269.30 = 205,660.92/x
  3. Step 3: Cross multiply
    419,220.12x = 628,269.30 × 205,660.92
  4. Step 4: Simplify right side
    419,220.12x = 129,210,442,245.76
  5. Step 5: Solve for x
    x = 129,210,442,245.76/419,220.12
  6. Step 6: Final answer
    x = 308,216.22

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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.