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Finding the Fourth Proportional to 228,726.51, 315,640.05 and 125,361.54

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Solution

The fourth proportional to 228,726.51, 315,640.05 and 125,361.54 is: 172,997.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,726.51 : 315,640.05 = 125,361.54 : x
  2. Step 2: Convert to fraction form
    228,726.51/315,640.05 = 125,361.54/x
  3. Step 3: Cross multiply
    228,726.51x = 315,640.05 × 125,361.54
  4. Step 4: Simplify right side
    228,726.51x = 39,569,121,964.58
  5. Step 5: Solve for x
    x = 39,569,121,964.58/228,726.51
  6. Step 6: Final answer
    x = 172,997.54

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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.