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Finding the Fourth Proportional to 226,388.40, 339,631.59 and 68,628.75

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Solution

The fourth proportional to 226,388.40, 339,631.59 and 68,628.75 is: 102,957.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,388.40 : 339,631.59 = 68,628.75 : x
  2. Step 2: Convert to fraction form
    226,388.40/339,631.59 = 68,628.75/x
  3. Step 3: Cross multiply
    226,388.40x = 339,631.59 × 68,628.75
  4. Step 4: Simplify right side
    226,388.40x = 23,308,491,482.21
  5. Step 5: Solve for x
    x = 23,308,491,482.21/226,388.40
  6. Step 6: Final answer
    x = 102,957.98

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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.