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Finding the Fourth Proportional to 396,855.61, 595,322.83 and 126,915.93

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Solution

The fourth proportional to 396,855.61, 595,322.83 and 126,915.93 is: 190,386.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,855.61 : 595,322.83 = 126,915.93 : x
  2. Step 2: Convert to fraction form
    396,855.61/595,322.83 = 126,915.93/x
  3. Step 3: Cross multiply
    396,855.61x = 595,322.83 × 126,915.93
  4. Step 4: Simplify right side
    396,855.61x = 75,555,950,619.68
  5. Step 5: Solve for x
    x = 75,555,950,619.68/396,855.61
  6. Step 6: Final answer
    x = 190,386.50

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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.