Home / 220,917.16-331,417.05-121,022.29

Finding the Fourth Proportional to 220,917.16, 331,417.05 and 121,022.29

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Solution

The fourth proportional to 220,917.16, 331,417.05 and 121,022.29 is: 181,556.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,917.16 : 331,417.05 = 121,022.29 : x
  2. Step 2: Convert to fraction form
    220,917.16/331,417.05 = 121,022.29/x
  3. Step 3: Cross multiply
    220,917.16x = 331,417.05 × 121,022.29
  4. Step 4: Simplify right side
    220,917.16x = 40,108,850,336.04
  5. Step 5: Solve for x
    x = 40,108,850,336.04/220,917.16
  6. Step 6: Final answer
    x = 181,556.07

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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.