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Finding the Fourth Proportional to 226,712.21, 340,069.52 and 68,940.20

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Solution

The fourth proportional to 226,712.21, 340,069.52 and 68,940.20 is: 103,410.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,712.21 : 340,069.52 = 68,940.20 : x
  2. Step 2: Convert to fraction form
    226,712.21/340,069.52 = 68,940.20/x
  3. Step 3: Cross multiply
    226,712.21x = 340,069.52 × 68,940.20
  4. Step 4: Simplify right side
    226,712.21x = 23,444,458,677.66
  5. Step 5: Solve for x
    x = 23,444,458,677.66/226,712.21
  6. Step 6: Final answer
    x = 103,410.66

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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.