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Finding the Fourth Proportional to 245,962.28, 368,906.70 and 68,450.78

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Solution

The fourth proportional to 245,962.28, 368,906.70 and 68,450.78 is: 102,665.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,962.28 : 368,906.70 = 68,450.78 : x
  2. Step 2: Convert to fraction form
    245,962.28/368,906.70 = 68,450.78/x
  3. Step 3: Cross multiply
    245,962.28x = 368,906.70 × 68,450.78
  4. Step 4: Simplify right side
    245,962.28x = 25,251,951,362.23
  5. Step 5: Solve for x
    x = 25,251,951,362.23/245,962.28
  6. Step 6: Final answer
    x = 102,665.95

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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.