Home / 221,905.64-305,584.74-192,821.78

Finding the Fourth Proportional to 221,905.64, 305,584.74 and 192,821.78

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Solution

The fourth proportional to 221,905.64, 305,584.74 and 192,821.78 is: 265,533.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,905.64 : 305,584.74 = 192,821.78 : x
  2. Step 2: Convert to fraction form
    221,905.64/305,584.74 = 192,821.78/x
  3. Step 3: Cross multiply
    221,905.64x = 305,584.74 × 192,821.78
  4. Step 4: Simplify right side
    221,905.64x = 58,923,393,507.64
  5. Step 5: Solve for x
    x = 58,923,393,507.64/221,905.64
  6. Step 6: Final answer
    x = 265,533.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.