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Finding the Fourth Proportional to 228,568.25, 342,786.18 and 68,637.73

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Solution

The fourth proportional to 228,568.25, 342,786.18 and 68,637.73 is: 102,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,568.25 : 342,786.18 = 68,637.73 : x
  2. Step 2: Convert to fraction form
    228,568.25/342,786.18 = 68,637.73/x
  3. Step 3: Cross multiply
    228,568.25x = 342,786.18 × 68,637.73
  4. Step 4: Simplify right side
    228,568.25x = 23,528,065,270.57
  5. Step 5: Solve for x
    x = 23,528,065,270.57/228,568.25
  6. Step 6: Final answer
    x = 102,936.72

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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.