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Finding the Fourth Proportional to 231,673.92, 319,545.15 and 212,615.25

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Solution

The fourth proportional to 231,673.92, 319,545.15 and 212,615.25 is: 293,257.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,673.92 : 319,545.15 = 212,615.25 : x
  2. Step 2: Convert to fraction form
    231,673.92/319,545.15 = 212,615.25/x
  3. Step 3: Cross multiply
    231,673.92x = 319,545.15 × 212,615.25
  4. Step 4: Simplify right side
    231,673.92x = 67,940,171,953.54
  5. Step 5: Solve for x
    x = 67,940,171,953.54/231,673.92
  6. Step 6: Final answer
    x = 293,257.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.