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Finding the Fourth Proportional to 396,857.61, 595,360.23 and 130,636.83

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Solution

The fourth proportional to 396,857.61, 595,360.23 and 130,636.83 is: 195,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,857.61 : 595,360.23 = 130,636.83 : x
  2. Step 2: Convert to fraction form
    396,857.61/595,360.23 = 130,636.83/x
  3. Step 3: Cross multiply
    396,857.61x = 595,360.23 × 130,636.83
  4. Step 4: Simplify right side
    396,857.61x = 77,775,974,897.98
  5. Step 5: Solve for x
    x = 77,775,974,897.98/396,857.61
  6. Step 6: Final answer
    x = 195,979.55

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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.