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Finding the Fourth Proportional to 228,865.82, 315,834.71 and 126,891

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Solution

The fourth proportional to 228,865.82, 315,834.71 and 126,891 is: 175,109.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,865.82 : 315,834.71 = 126,891 : x
  2. Step 2: Convert to fraction form
    228,865.82/315,834.71 = 126,891/x
  3. Step 3: Cross multiply
    228,865.82x = 315,834.71 × 126,891
  4. Step 4: Simplify right side
    228,865.82x = 40,076,581,552.16
  5. Step 5: Solve for x
    x = 40,076,581,552.16/228,865.82
  6. Step 6: Final answer
    x = 175,109.51

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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.