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Finding the Fourth Proportional to 247,707.90, 341,978.76 and 163,071

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Solution

The fourth proportional to 247,707.90, 341,978.76 and 163,071 is: 225,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,707.90 : 341,978.76 = 163,071 : x
  2. Step 2: Convert to fraction form
    247,707.90/341,978.76 = 163,071/x
  3. Step 3: Cross multiply
    247,707.90x = 341,978.76 × 163,071
  4. Step 4: Simplify right side
    247,707.90x = 55,766,818,371.96
  5. Step 5: Solve for x
    x = 55,766,818,371.96/247,707.90
  6. Step 6: Final answer
    x = 225,131.37

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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.