Home / 215,906.18-324,139.91-166,021.31

Finding the Fourth Proportional to 215,906.18, 324,139.91 and 166,021.31

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Solution

The fourth proportional to 215,906.18, 324,139.91 and 166,021.31 is: 249,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,906.18 : 324,139.91 = 166,021.31 : x
  2. Step 2: Convert to fraction form
    215,906.18/324,139.91 = 166,021.31/x
  3. Step 3: Cross multiply
    215,906.18x = 324,139.91 × 166,021.31
  4. Step 4: Simplify right side
    215,906.18x = 53,814,132,481.48
  5. Step 5: Solve for x
    x = 53,814,132,481.48/215,906.18
  6. Step 6: Final answer
    x = 249,247.76

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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.