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Finding the Fourth Proportional to 207,679.73, 311,542.81 and 65,545.22

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Solution

The fourth proportional to 207,679.73, 311,542.81 and 65,545.22 is: 98,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,679.73 : 311,542.81 = 65,545.22 : x
  2. Step 2: Convert to fraction form
    207,679.73/311,542.81 = 65,545.22/x
  3. Step 3: Cross multiply
    207,679.73x = 311,542.81 × 65,545.22
  4. Step 4: Simplify right side
    207,679.73x = 20,420,142,635.86
  5. Step 5: Solve for x
    x = 20,420,142,635.86/207,679.73
  6. Step 6: Final answer
    x = 98,325.16

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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.