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Finding the Fourth Proportional to 208,627.43, 312,999.51 and 68,484.47

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Solution

The fourth proportional to 208,627.43, 312,999.51 and 68,484.47 is: 102,745.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,627.43 : 312,999.51 = 68,484.47 : x
  2. Step 2: Convert to fraction form
    208,627.43/312,999.51 = 68,484.47/x
  3. Step 3: Cross multiply
    208,627.43x = 312,999.51 × 68,484.47
  4. Step 4: Simplify right side
    208,627.43x = 21,435,605,552.61
  5. Step 5: Solve for x
    x = 21,435,605,552.61/208,627.43
  6. Step 6: Final answer
    x = 102,745.86

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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.