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Finding the Fourth Proportional to 251,185.68, 376,636.50 and 82,660.47

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Solution

The fourth proportional to 251,185.68, 376,636.50 and 82,660.47 is: 123,943.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,185.68 : 376,636.50 = 82,660.47 : x
  2. Step 2: Convert to fraction form
    251,185.68/376,636.50 = 82,660.47/x
  3. Step 3: Cross multiply
    251,185.68x = 376,636.50 × 82,660.47
  4. Step 4: Simplify right side
    251,185.68x = 31,132,950,109.16
  5. Step 5: Solve for x
    x = 31,132,950,109.16/251,185.68
  6. Step 6: Final answer
    x = 123,943.97

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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.