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Finding the Fourth Proportional to 253,195.22, 379,736.34 and 75,679.17

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Solution

The fourth proportional to 253,195.22, 379,736.34 and 75,679.17 is: 113,501.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,195.22 : 379,736.34 = 75,679.17 : x
  2. Step 2: Convert to fraction form
    253,195.22/379,736.34 = 75,679.17/x
  3. Step 3: Cross multiply
    253,195.22x = 379,736.34 × 75,679.17
  4. Step 4: Simplify right side
    253,195.22x = 28,738,129,322.23
  5. Step 5: Solve for x
    x = 28,738,129,322.23/253,195.22
  6. Step 6: Final answer
    x = 113,501.86

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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.