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Finding the Fourth Proportional to 228,726.26, 315,639.71 and 125,361.29

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Solution

The fourth proportional to 228,726.26, 315,639.71 and 125,361.29 is: 172,997.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,726.26 : 315,639.71 = 125,361.29 : x
  2. Step 2: Convert to fraction form
    228,726.26/315,639.71 = 125,361.29/x
  3. Step 3: Cross multiply
    228,726.26x = 315,639.71 × 125,361.29
  4. Step 4: Simplify right side
    228,726.26x = 39,568,999,804.92
  5. Step 5: Solve for x
    x = 39,568,999,804.92/228,726.26
  6. Step 6: Final answer
    x = 172,997.19

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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.