Home / 327,679.18-491,709.83-138,127.94

Finding the Fourth Proportional to 327,679.18, 491,709.83 and 138,127.94

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Solution

The fourth proportional to 327,679.18, 491,709.83 and 138,127.94 is: 207,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,679.18 : 491,709.83 = 138,127.94 : x
  2. Step 2: Convert to fraction form
    327,679.18/491,709.83 = 138,127.94/x
  3. Step 3: Cross multiply
    327,679.18x = 491,709.83 × 138,127.94
  4. Step 4: Simplify right side
    327,679.18x = 67,918,864,590.37
  5. Step 5: Solve for x
    x = 67,918,864,590.37/327,679.18
  6. Step 6: Final answer
    x = 207,272.45

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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.