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Finding the Fourth Proportional to 445,010.68, 667,629.02 and 129,467.28

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Solution

The fourth proportional to 445,010.68, 667,629.02 and 129,467.28 is: 194,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,010.68 : 667,629.02 = 129,467.28 : x
  2. Step 2: Convert to fraction form
    445,010.68/667,629.02 = 129,467.28/x
  3. Step 3: Cross multiply
    445,010.68x = 667,629.02 × 129,467.28
  4. Step 4: Simplify right side
    445,010.68x = 86,436,113,268.47
  5. Step 5: Solve for x
    x = 86,436,113,268.47/445,010.68
  6. Step 6: Final answer
    x = 194,233.80

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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.