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Finding the Fourth Proportional to 268,328.31, 402,489.62 and 68,647.11

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Solution

The fourth proportional to 268,328.31, 402,489.62 and 68,647.11 is: 102,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,328.31 : 402,489.62 = 68,647.11 : x
  2. Step 2: Convert to fraction form
    268,328.31/402,489.62 = 68,647.11/x
  3. Step 3: Cross multiply
    268,328.31x = 402,489.62 × 68,647.11
  4. Step 4: Simplify right side
    268,328.31x = 27,629,747,622.85
  5. Step 5: Solve for x
    x = 27,629,747,622.85/268,328.31
  6. Step 6: Final answer
    x = 102,969.93

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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.