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Finding the Fourth Proportional to 266,441.28, 399,465.36 and 126,036

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Solution

The fourth proportional to 266,441.28, 399,465.36 and 126,036 is: 188,961.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,441.28 : 399,465.36 = 126,036 : x
  2. Step 2: Convert to fraction form
    266,441.28/399,465.36 = 126,036/x
  3. Step 3: Cross multiply
    266,441.28x = 399,465.36 × 126,036
  4. Step 4: Simplify right side
    266,441.28x = 50,347,016,112.96
  5. Step 5: Solve for x
    x = 50,347,016,112.96/266,441.28
  6. Step 6: Final answer
    x = 188,961.02

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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.