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Finding the Fourth Proportional to 323,128.30, 445,851.90 and 195,729.88

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Solution

The fourth proportional to 323,128.30, 445,851.90 and 195,729.88 is: 270,067.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,128.30 : 445,851.90 = 195,729.88 : x
  2. Step 2: Convert to fraction form
    323,128.30/445,851.90 = 195,729.88/x
  3. Step 3: Cross multiply
    323,128.30x = 445,851.90 × 195,729.88
  4. Step 4: Simplify right side
    323,128.30x = 87,266,538,884.77
  5. Step 5: Solve for x
    x = 87,266,538,884.77/323,128.30
  6. Step 6: Final answer
    x = 270,067.77

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Why These Related Problems?

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