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Finding the Fourth Proportional to 204,396, 306,635 and 71,240.50

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Solution

The fourth proportional to 204,396, 306,635 and 71,240.50 is: 106,875.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,396 : 306,635 = 71,240.50 : x
  2. Step 2: Convert to fraction form
    204,396/306,635 = 71,240.50/x
  3. Step 3: Cross multiply
    204,396x = 306,635 × 71,240.50
  4. Step 4: Simplify right side
    204,396x = 21,844,830,717.50
  5. Step 5: Solve for x
    x = 21,844,830,717.50/204,396
  6. Step 6: Final answer
    x = 106,875.04

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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.