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Finding the Fourth Proportional to 396,980.80, 595,461.60 and 239,089.60

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Solution

The fourth proportional to 396,980.80, 595,461.60 and 239,089.60 is: 358,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,980.80 : 595,461.60 = 239,089.60 : x
  2. Step 2: Convert to fraction form
    396,980.80/595,461.60 = 239,089.60/x
  3. Step 3: Cross multiply
    396,980.80x = 595,461.60 × 239,089.60
  4. Step 4: Simplify right side
    396,980.80x = 142,368,675,759.36
  5. Step 5: Solve for x
    x = 142,368,675,759.36/396,980.80
  6. Step 6: Final answer
    x = 358,628.62

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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.