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Finding the Fourth Proportional to 245,729.75, 368,594.78 and 68,236.78

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Solution

The fourth proportional to 245,729.75, 368,594.78 and 68,236.78 is: 102,355.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,729.75 : 368,594.78 = 68,236.78 : x
  2. Step 2: Convert to fraction form
    245,729.75/368,594.78 = 68,236.78/x
  3. Step 3: Cross multiply
    245,729.75x = 368,594.78 × 68,236.78
  4. Step 4: Simplify right side
    245,729.75x = 25,151,720,532.37
  5. Step 5: Solve for x
    x = 25,151,720,532.37/245,729.75
  6. Step 6: Final answer
    x = 102,355.21

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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.