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Finding the Fourth Proportional to 445,542.75, 667,961.47 and 161,189.01

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Solution

The fourth proportional to 445,542.75, 667,961.47 and 161,189.01 is: 241,655.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,542.75 : 667,961.47 = 161,189.01 : x
  2. Step 2: Convert to fraction form
    445,542.75/667,961.47 = 161,189.01/x
  3. Step 3: Cross multiply
    445,542.75x = 667,961.47 × 161,189.01
  4. Step 4: Simplify right side
    445,542.75x = 107,668,045,710.27
  5. Step 5: Solve for x
    x = 107,668,045,710.27/445,542.75
  6. Step 6: Final answer
    x = 241,655.93

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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.