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Finding the Fourth Proportional to 279,577.28, 419,366.92 and 111,086.66

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Solution

The fourth proportional to 279,577.28, 419,366.92 and 111,086.66 is: 166,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,577.28 : 419,366.92 = 111,086.66 : x
  2. Step 2: Convert to fraction form
    279,577.28/419,366.92 = 111,086.66/x
  3. Step 3: Cross multiply
    279,577.28x = 419,366.92 × 111,086.66
  4. Step 4: Simplify right side
    279,577.28x = 46,586,070,457.29
  5. Step 5: Solve for x
    x = 46,586,070,457.29/279,577.28
  6. Step 6: Final answer
    x = 166,630.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.