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Finding the Fourth Proportional to 221,361.60, 305,505.20 and 125,882.64

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Solution

The fourth proportional to 221,361.60, 305,505.20 and 125,882.64 is: 173,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,361.60 : 305,505.20 = 125,882.64 : x
  2. Step 2: Convert to fraction form
    221,361.60/305,505.20 = 125,882.64/x
  3. Step 3: Cross multiply
    221,361.60x = 305,505.20 × 125,882.64
  4. Step 4: Simplify right side
    221,361.60x = 38,457,801,109.73
  5. Step 5: Solve for x
    x = 38,457,801,109.73/221,361.60
  6. Step 6: Final answer
    x = 173,732.94

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1.5x scale

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.