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Finding the Fourth Proportional to 226,335.53, 339,555.80 and 66,405

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Solution

The fourth proportional to 226,335.53, 339,555.80 and 66,405 is: 99,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,335.53 : 339,555.80 = 66,405 : x
  2. Step 2: Convert to fraction form
    226,335.53/339,555.80 = 66,405/x
  3. Step 3: Cross multiply
    226,335.53x = 339,555.80 × 66,405
  4. Step 4: Simplify right side
    226,335.53x = 22,548,202,899
  5. Step 5: Solve for x
    x = 22,548,202,899/226,335.53
  6. Step 6: Final answer
    x = 99,622.90

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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.