Home / 221,469.12-332,247.44-81,228.96

Finding the Fourth Proportional to 221,469.12, 332,247.44 and 81,228.96

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Solution

The fourth proportional to 221,469.12, 332,247.44 and 81,228.96 is: 121,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,469.12 : 332,247.44 = 81,228.96 : x
  2. Step 2: Convert to fraction form
    221,469.12/332,247.44 = 81,228.96/x
  3. Step 3: Cross multiply
    221,469.12x = 332,247.44 × 81,228.96
  4. Step 4: Simplify right side
    221,469.12x = 26,988,114,013.86
  5. Step 5: Solve for x
    x = 26,988,114,013.86/221,469.12
  6. Step 6: Final answer
    x = 121,859.49

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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.