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Finding the Fourth Proportional to 208,626.93, 312,998.76 and 68,483.97

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Solution

The fourth proportional to 208,626.93, 312,998.76 and 68,483.97 is: 102,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,626.93 : 312,998.76 = 68,483.97 : x
  2. Step 2: Convert to fraction form
    208,626.93/312,998.76 = 68,483.97/x
  3. Step 3: Cross multiply
    208,626.93x = 312,998.76 × 68,483.97
  4. Step 4: Simplify right side
    208,626.93x = 21,435,397,689.88
  5. Step 5: Solve for x
    x = 21,435,397,689.88/208,626.93
  6. Step 6: Final answer
    x = 102,745.11

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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.