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Finding the Fourth Proportional to 199,915.75, 299,873.67 and 52,171.75

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Solution

The fourth proportional to 199,915.75, 299,873.67 and 52,171.75 is: 78,257.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,915.75 : 299,873.67 = 52,171.75 : x
  2. Step 2: Convert to fraction form
    199,915.75/299,873.67 = 52,171.75/x
  3. Step 3: Cross multiply
    199,915.75x = 299,873.67 × 52,171.75
  4. Step 4: Simplify right side
    199,915.75x = 15,644,934,142.82
  5. Step 5: Solve for x
    x = 15,644,934,142.82/199,915.75
  6. Step 6: Final answer
    x = 78,257.64

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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.