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Finding the Fourth Proportional to 445,324.82, 667,988.60 and 108,365.54

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Solution

The fourth proportional to 445,324.82, 667,988.60 and 108,365.54 is: 162,548.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,324.82 : 667,988.60 = 108,365.54 : x
  2. Step 2: Convert to fraction form
    445,324.82/667,988.60 = 108,365.54/x
  3. Step 3: Cross multiply
    445,324.82x = 667,988.60 × 108,365.54
  4. Step 4: Simplify right side
    445,324.82x = 72,386,941,471.07
  5. Step 5: Solve for x
    x = 72,386,941,471.07/445,324.82
  6. Step 6: Final answer
    x = 162,548.64

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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.