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Finding the Fourth Proportional to 245,987.50, 368,974.76 and 68,487.34

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Solution

The fourth proportional to 245,987.50, 368,974.76 and 68,487.34 is: 102,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,987.50 : 368,974.76 = 68,487.34 : x
  2. Step 2: Convert to fraction form
    245,987.50/368,974.76 = 68,487.34/x
  3. Step 3: Cross multiply
    245,987.50x = 368,974.76 × 68,487.34
  4. Step 4: Simplify right side
    245,987.50x = 25,270,099,839.54
  5. Step 5: Solve for x
    x = 25,270,099,839.54/245,987.50
  6. Step 6: Final answer
    x = 102,729.20

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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.