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Finding the Fourth Proportional to 251,129.29, 376,724.91 and 82,606.36

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Solution

The fourth proportional to 251,129.29, 376,724.91 and 82,606.36 is: 123,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,129.29 : 376,724.91 = 82,606.36 : x
  2. Step 2: Convert to fraction form
    251,129.29/376,724.91 = 82,606.36/x
  3. Step 3: Cross multiply
    251,129.29x = 376,724.91 × 82,606.36
  4. Step 4: Simplify right side
    251,129.29x = 31,119,873,536.43
  5. Step 5: Solve for x
    x = 31,119,873,536.43/251,129.29
  6. Step 6: Final answer
    x = 123,919.73

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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.