Home / 419,720.13-629,766.05-219,993.03

Finding the Fourth Proportional to 419,720.13, 629,766.05 and 219,993.03

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Solution

The fourth proportional to 419,720.13, 629,766.05 and 219,993.03 is: 330,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,720.13 : 629,766.05 = 219,993.03 : x
  2. Step 2: Convert to fraction form
    419,720.13/629,766.05 = 219,993.03/x
  3. Step 3: Cross multiply
    419,720.13x = 629,766.05 × 219,993.03
  4. Step 4: Simplify right side
    419,720.13x = 138,544,140,430.67
  5. Step 5: Solve for x
    x = 138,544,140,430.67/419,720.13
  6. Step 6: Final answer
    x = 330,086.96

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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.