Home / 419,619.74-579,079.49-228,636.32

Finding the Fourth Proportional to 419,619.74, 579,079.49 and 228,636.32

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Solution

The fourth proportional to 419,619.74, 579,079.49 and 228,636.32 is: 315,520.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,619.74 : 579,079.49 = 228,636.32 : x
  2. Step 2: Convert to fraction form
    419,619.74/579,079.49 = 228,636.32/x
  3. Step 3: Cross multiply
    419,619.74x = 579,079.49 × 228,636.32
  4. Step 4: Simplify right side
    419,619.74x = 132,398,599,542.50
  5. Step 5: Solve for x
    x = 132,398,599,542.50/419,619.74
  6. Step 6: Final answer
    x = 315,520.43

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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.