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Finding the Fourth Proportional to 228,425.25, 315,223.11 and 126,448.58

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Solution

The fourth proportional to 228,425.25, 315,223.11 and 126,448.58 is: 174,496.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,425.25 : 315,223.11 = 126,448.58 : x
  2. Step 2: Convert to fraction form
    228,425.25/315,223.11 = 126,448.58/x
  3. Step 3: Cross multiply
    228,425.25x = 315,223.11 × 126,448.58
  4. Step 4: Simplify right side
    228,425.25x = 39,859,514,642.68
  5. Step 5: Solve for x
    x = 39,859,514,642.68/228,425.25
  6. Step 6: Final answer
    x = 174,496.97

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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.