Home / 215,979.71-324,031.74-66,241.96

Finding the Fourth Proportional to 215,979.71, 324,031.74 and 66,241.96

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Solution

The fourth proportional to 215,979.71, 324,031.74 and 66,241.96 is: 99,382.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,979.71 : 324,031.74 = 66,241.96 : x
  2. Step 2: Convert to fraction form
    215,979.71/324,031.74 = 66,241.96/x
  3. Step 3: Cross multiply
    215,979.71x = 324,031.74 × 66,241.96
  4. Step 4: Simplify right side
    215,979.71x = 21,464,496,749.73
  5. Step 5: Solve for x
    x = 21,464,496,749.73/215,979.71
  6. Step 6: Final answer
    x = 99,382.01

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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.