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Finding the Fourth Proportional to 208,806.72, 313,249.20 and 68,573.28

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Solution

The fourth proportional to 208,806.72, 313,249.20 and 68,573.28 is: 102,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,806.72 : 313,249.20 = 68,573.28 : x
  2. Step 2: Convert to fraction form
    208,806.72/313,249.20 = 68,573.28/x
  3. Step 3: Cross multiply
    208,806.72x = 313,249.20 × 68,573.28
  4. Step 4: Simplify right side
    208,806.72x = 21,480,525,101.38
  5. Step 5: Solve for x
    x = 21,480,525,101.38/208,806.72
  6. Step 6: Final answer
    x = 102,872.77

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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.