Home / 215,905.43-324,138.79-166,020.56

Finding the Fourth Proportional to 215,905.43, 324,138.79 and 166,020.56

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Solution

The fourth proportional to 215,905.43, 324,138.79 and 166,020.56 is: 249,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,905.43 : 324,138.79 = 166,020.56 : x
  2. Step 2: Convert to fraction form
    215,905.43/324,138.79 = 166,020.56/x
  3. Step 3: Cross multiply
    215,905.43x = 324,138.79 × 166,020.56
  4. Step 4: Simplify right side
    215,905.43x = 53,813,702,208.12
  5. Step 5: Solve for x
    x = 53,813,702,208.12/215,905.43
  6. Step 6: Final answer
    x = 249,246.64

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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.