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Finding the Fourth Proportional to 228,542.82, 315,390.45 and 126,571.38

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Solution

The fourth proportional to 228,542.82, 315,390.45 and 126,571.38 is: 174,669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,542.82 : 315,390.45 = 126,571.38 : x
  2. Step 2: Convert to fraction form
    228,542.82/315,390.45 = 126,571.38/x
  3. Step 3: Cross multiply
    228,542.82x = 315,390.45 × 126,571.38
  4. Step 4: Simplify right side
    228,542.82x = 39,919,404,495.32
  5. Step 5: Solve for x
    x = 39,919,404,495.32/228,542.82
  6. Step 6: Final answer
    x = 174,669.26

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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.