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Finding the Fourth Proportional to 247,215.97, 341,164.73 and 139,802

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Solution

The fourth proportional to 247,215.97, 341,164.73 and 139,802 is: 192,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,215.97 : 341,164.73 = 139,802 : x
  2. Step 2: Convert to fraction form
    247,215.97/341,164.73 = 139,802/x
  3. Step 3: Cross multiply
    247,215.97x = 341,164.73 × 139,802
  4. Step 4: Simplify right side
    247,215.97x = 47,695,511,583.46
  5. Step 5: Solve for x
    x = 47,695,511,583.46/247,215.97
  6. Step 6: Final answer
    x = 192,930.54

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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.