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Finding the Fourth Proportional to 223,563.69, 335,435.14 and 81,418.87

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Solution

The fourth proportional to 223,563.69, 335,435.14 and 81,418.87 is: 122,160.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,563.69 : 335,435.14 = 81,418.87 : x
  2. Step 2: Convert to fraction form
    223,563.69/335,435.14 = 81,418.87/x
  3. Step 3: Cross multiply
    223,563.69x = 335,435.14 × 81,418.87
  4. Step 4: Simplify right side
    223,563.69x = 27,310,750,578.16
  5. Step 5: Solve for x
    x = 27,310,750,578.16/223,563.69
  6. Step 6: Final answer
    x = 122,160.94

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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.