Home / 221,905.43-332,825.34-81,631.25

Finding the Fourth Proportional to 221,905.43, 332,825.34 and 81,631.25

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Solution

The fourth proportional to 221,905.43, 332,825.34 and 81,631.25 is: 122,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,905.43 : 332,825.34 = 81,631.25 : x
  2. Step 2: Convert to fraction form
    221,905.43/332,825.34 = 81,631.25/x
  3. Step 3: Cross multiply
    221,905.43x = 332,825.34 × 81,631.25
  4. Step 4: Simplify right side
    221,905.43x = 27,168,948,535.88
  5. Step 5: Solve for x
    x = 27,168,948,535.88/221,905.43
  6. Step 6: Final answer
    x = 122,434.81

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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.