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Finding the Fourth Proportional to 203,357.88, 305,085.11 and 70,239.24

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Solution

The fourth proportional to 203,357.88, 305,085.11 and 70,239.24 is: 105,375.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,357.88 : 305,085.11 = 70,239.24 : x
  2. Step 2: Convert to fraction form
    203,357.88/305,085.11 = 70,239.24/x
  3. Step 3: Cross multiply
    203,357.88x = 305,085.11 × 70,239.24
  4. Step 4: Simplify right side
    203,357.88x = 21,428,945,910.52
  5. Step 5: Solve for x
    x = 21,428,945,910.52/203,357.88
  6. Step 6: Final answer
    x = 105,375.54

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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.