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Finding the Fourth Proportional to 247,409.33, 341,388.56 and 138,508.00

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Solution

The fourth proportional to 247,409.33, 341,388.56 and 138,508.00 is: 191,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,409.33 : 341,388.56 = 138,508.00 : x
  2. Step 2: Convert to fraction form
    247,409.33/341,388.56 = 138,508.00/x
  3. Step 3: Cross multiply
    247,409.33x = 341,388.56 × 138,508.00
  4. Step 4: Simplify right side
    247,409.33x = 47,285,046,161.28
  5. Step 5: Solve for x
    x = 47,285,046,161.28/247,409.33
  6. Step 6: Final answer
    x = 191,120.71

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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.