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Finding the Fourth Proportional to 238,091.68, 357,137.70 and 71,879.68

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Solution

The fourth proportional to 238,091.68, 357,137.70 and 71,879.68 is: 107,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,091.68 : 357,137.70 = 71,879.68 : x
  2. Step 2: Convert to fraction form
    238,091.68/357,137.70 = 71,879.68/x
  3. Step 3: Cross multiply
    238,091.68x = 357,137.70 × 71,879.68
  4. Step 4: Simplify right side
    238,091.68x = 25,670,943,591.94
  5. Step 5: Solve for x
    x = 25,670,943,591.94/238,091.68
  6. Step 6: Final answer
    x = 107,819.57

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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.