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Finding the Fourth Proportional to 231,099.82, 346,686.64 and 79,279.65

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Solution

The fourth proportional to 231,099.82, 346,686.64 and 79,279.65 is: 118,932.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,099.82 : 346,686.64 = 79,279.65 : x
  2. Step 2: Convert to fraction form
    231,099.82/346,686.64 = 79,279.65/x
  3. Step 3: Cross multiply
    231,099.82x = 346,686.64 × 79,279.65
  4. Step 4: Simplify right side
    231,099.82x = 27,485,195,478.88
  5. Step 5: Solve for x
    x = 27,485,195,478.88/231,099.82
  6. Step 6: Final answer
    x = 118,932.14

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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.