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Finding the Fourth Proportional to 396,618.90, 594,866.70 and 130,377.66

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Solution

The fourth proportional to 396,618.90, 594,866.70 and 130,377.66 is: 195,546.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,618.90 : 594,866.70 = 130,377.66 : x
  2. Step 2: Convert to fraction form
    396,618.90/594,866.70 = 130,377.66/x
  3. Step 3: Cross multiply
    396,618.90x = 594,866.70 × 130,377.66
  4. Step 4: Simplify right side
    396,618.90x = 77,557,328,357.92
  5. Step 5: Solve for x
    x = 77,557,328,357.92/396,618.90
  6. Step 6: Final answer
    x = 195,546.22

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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.