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Finding the Fourth Proportional to 394,061.51, 591,175.28 and 127,801.26

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Solution

The fourth proportional to 394,061.51, 591,175.28 and 127,801.26 is: 191,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,061.51 : 591,175.28 = 127,801.26 : x
  2. Step 2: Convert to fraction form
    394,061.51/591,175.28 = 127,801.26/x
  3. Step 3: Cross multiply
    394,061.51x = 591,175.28 × 127,801.26
  4. Step 4: Simplify right side
    394,061.51x = 75,552,945,025.85
  5. Step 5: Solve for x
    x = 75,552,945,025.85/394,061.51
  6. Step 6: Final answer
    x = 191,728.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.