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Finding the Fourth Proportional to 207,610.29, 311,218.61 and 67,270.50

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Solution

The fourth proportional to 207,610.29, 311,218.61 and 67,270.50 is: 100,841.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,610.29 : 311,218.61 = 67,270.50 : x
  2. Step 2: Convert to fraction form
    207,610.29/311,218.61 = 67,270.50/x
  3. Step 3: Cross multiply
    207,610.29x = 311,218.61 × 67,270.50
  4. Step 4: Simplify right side
    207,610.29x = 20,935,831,167.65
  5. Step 5: Solve for x
    x = 20,935,831,167.65/207,610.29
  6. Step 6: Final answer
    x = 100,841.97

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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.