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Finding the Fourth Proportional to 266,112.45, 367,238.61 and 145,257.21

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Solution

The fourth proportional to 266,112.45, 367,238.61 and 145,257.21 is: 200,456.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,112.45 : 367,238.61 = 145,257.21 : x
  2. Step 2: Convert to fraction form
    266,112.45/367,238.61 = 145,257.21/x
  3. Step 3: Cross multiply
    266,112.45x = 367,238.61 × 145,257.21
  4. Step 4: Simplify right side
    266,112.45x = 53,344,055,892.88
  5. Step 5: Solve for x
    x = 53,344,055,892.88/266,112.45
  6. Step 6: Final answer
    x = 200,456.82

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