Home / 215,931.88-323,945.21-66,183.43

Finding the Fourth Proportional to 215,931.88, 323,945.21 and 66,183.43

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Solution

The fourth proportional to 215,931.88, 323,945.21 and 66,183.43 is: 99,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,931.88 : 323,945.21 = 66,183.43 : x
  2. Step 2: Convert to fraction form
    215,931.88/323,945.21 = 66,183.43/x
  3. Step 3: Cross multiply
    215,931.88x = 323,945.21 × 66,183.43
  4. Step 4: Simplify right side
    215,931.88x = 21,439,805,129.87
  5. Step 5: Solve for x
    x = 21,439,805,129.87/215,931.88
  6. Step 6: Final answer
    x = 99,289.67

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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.