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Finding the Fourth Proportional to 327,621.66, 491,104.82 and 138,127.82

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Solution

The fourth proportional to 327,621.66, 491,104.82 and 138,127.82 is: 207,053.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,621.66 : 491,104.82 = 138,127.82 : x
  2. Step 2: Convert to fraction form
    327,621.66/491,104.82 = 138,127.82/x
  3. Step 3: Cross multiply
    327,621.66x = 491,104.82 × 138,127.82
  4. Step 4: Simplify right side
    327,621.66x = 67,835,238,178.09
  5. Step 5: Solve for x
    x = 67,835,238,178.09/327,621.66
  6. Step 6: Final answer
    x = 207,053.58

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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.