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Finding the Fourth Proportional to 228,716.44, 315,630.56 and 126,743.61

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Solution

The fourth proportional to 228,716.44, 315,630.56 and 126,743.61 is: 174,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,716.44 : 315,630.56 = 126,743.61 : x
  2. Step 2: Convert to fraction form
    228,716.44/315,630.56 = 126,743.61/x
  3. Step 3: Cross multiply
    228,716.44x = 315,630.56 × 126,743.61
  4. Step 4: Simplify right side
    228,716.44x = 40,004,155,377.50
  5. Step 5: Solve for x
    x = 40,004,155,377.50/228,716.44
  6. Step 6: Final answer
    x = 174,907.21

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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.