Home / 215,932.66-323,945.40-66,183.28

Finding the Fourth Proportional to 215,932.66, 323,945.40 and 66,183.28

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Solution

The fourth proportional to 215,932.66, 323,945.40 and 66,183.28 is: 99,289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,932.66 : 323,945.40 = 66,183.28 : x
  2. Step 2: Convert to fraction form
    215,932.66/323,945.40 = 66,183.28/x
  3. Step 3: Cross multiply
    215,932.66x = 323,945.40 × 66,183.28
  4. Step 4: Simplify right side
    215,932.66x = 21,439,769,112.91
  5. Step 5: Solve for x
    x = 21,439,769,112.91/215,932.66
  6. Step 6: Final answer
    x = 99,289.14

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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.