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Finding the Fourth Proportional to 243,183.87, 335,588.16 and 135,763.90

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Solution

The fourth proportional to 243,183.87, 335,588.16 and 135,763.90 is: 187,351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,183.87 : 335,588.16 = 135,763.90 : x
  2. Step 2: Convert to fraction form
    243,183.87/335,588.16 = 135,763.90/x
  3. Step 3: Cross multiply
    243,183.87x = 335,588.16 × 135,763.90
  4. Step 4: Simplify right side
    243,183.87x = 45,560,757,065.57
  5. Step 5: Solve for x
    x = 45,560,757,065.57/243,183.87
  6. Step 6: Final answer
    x = 187,351.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.