Home / 419,729.80-579,210.24-228,739.12

Finding the Fourth Proportional to 419,729.80, 579,210.24 and 228,739.12

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Solution

The fourth proportional to 419,729.80, 579,210.24 and 228,739.12 is: 315,650.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,729.80 : 579,210.24 = 228,739.12 : x
  2. Step 2: Convert to fraction form
    419,729.80/579,210.24 = 228,739.12/x
  3. Step 3: Cross multiply
    419,729.80x = 579,210.24 × 228,739.12
  4. Step 4: Simplify right side
    419,729.80x = 132,488,040,592.59
  5. Step 5: Solve for x
    x = 132,488,040,592.59/419,729.80
  6. Step 6: Final answer
    x = 315,650.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.