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Finding the Fourth Proportional to 223,485, 335,438.18 and 81,467.54

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Solution

The fourth proportional to 223,485, 335,438.18 and 81,467.54 is: 122,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,485 : 335,438.18 = 81,467.54 : x
  2. Step 2: Convert to fraction form
    223,485/335,438.18 = 81,467.54/x
  3. Step 3: Cross multiply
    223,485x = 335,438.18 × 81,467.54
  4. Step 4: Simplify right side
    223,485x = 27,327,321,262.15
  5. Step 5: Solve for x
    x = 27,327,321,262.15/223,485
  6. Step 6: Final answer
    x = 122,278.10

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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.