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Finding the Fourth Proportional to 279,326.27, 418,993.30 and 79,646.73

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Solution

The fourth proportional to 279,326.27, 418,993.30 and 79,646.73 is: 119,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,326.27 : 418,993.30 = 79,646.73 : x
  2. Step 2: Convert to fraction form
    279,326.27/418,993.30 = 79,646.73/x
  3. Step 3: Cross multiply
    279,326.27x = 418,993.30 × 79,646.73
  4. Step 4: Simplify right side
    279,326.27x = 33,371,446,236.91
  5. Step 5: Solve for x
    x = 33,371,446,236.91/279,326.27
  6. Step 6: Final answer
    x = 119,471.21

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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.