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Finding the Fourth Proportional to 245,961.78, 368,905.95 and 68,450.28

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Solution

The fourth proportional to 245,961.78, 368,905.95 and 68,450.28 is: 102,665.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,961.78 : 368,905.95 = 68,450.28 : x
  2. Step 2: Convert to fraction form
    245,961.78/368,905.95 = 68,450.28/x
  3. Step 3: Cross multiply
    245,961.78x = 368,905.95 × 68,450.28
  4. Step 4: Simplify right side
    245,961.78x = 25,251,715,571.17
  5. Step 5: Solve for x
    x = 25,251,715,571.17/245,961.78
  6. Step 6: Final answer
    x = 102,665.20

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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.