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Finding the Fourth Proportional to 226,605.20, 339,907.80 and 121,629.20

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Solution

The fourth proportional to 226,605.20, 339,907.80 and 121,629.20 is: 182,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,605.20 : 339,907.80 = 121,629.20 : x
  2. Step 2: Convert to fraction form
    226,605.20/339,907.80 = 121,629.20/x
  3. Step 3: Cross multiply
    226,605.20x = 339,907.80 × 121,629.20
  4. Step 4: Simplify right side
    226,605.20x = 41,342,713,787.76
  5. Step 5: Solve for x
    x = 41,342,713,787.76/226,605.20
  6. Step 6: Final answer
    x = 182,443.80

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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.