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Finding the Fourth Proportional to 396,072.40, 594,254.40 and 129,841.60

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Solution

The fourth proportional to 396,072.40, 594,254.40 and 129,841.60 is: 194,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,072.40 : 594,254.40 = 129,841.60 : x
  2. Step 2: Convert to fraction form
    396,072.40/594,254.40 = 129,841.60/x
  3. Step 3: Cross multiply
    396,072.40x = 594,254.40 × 129,841.60
  4. Step 4: Simplify right side
    396,072.40x = 77,158,942,103.04
  5. Step 5: Solve for x
    x = 77,158,942,103.04/396,072.40
  6. Step 6: Final answer
    x = 194,810.20

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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.