Home / 279,865.13-386,187.19-163,605.78

Finding the Fourth Proportional to 279,865.13, 386,187.19 and 163,605.78

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Solution

The fourth proportional to 279,865.13, 386,187.19 and 163,605.78 is: 225,760.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,865.13 : 386,187.19 = 163,605.78 : x
  2. Step 2: Convert to fraction form
    279,865.13/386,187.19 = 163,605.78/x
  3. Step 3: Cross multiply
    279,865.13x = 386,187.19 × 163,605.78
  4. Step 4: Simplify right side
    279,865.13x = 63,182,456,445.96
  5. Step 5: Solve for x
    x = 63,182,456,445.96/279,865.13
  6. Step 6: Final answer
    x = 225,760.37

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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.