Home / 290,836.11-436,263.89-80,456.43

Finding the Fourth Proportional to 290,836.11, 436,263.89 and 80,456.43

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Solution

The fourth proportional to 290,836.11, 436,263.89 and 80,456.43 is: 120,687.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,836.11 : 436,263.89 = 80,456.43 : x
  2. Step 2: Convert to fraction form
    290,836.11/436,263.89 = 80,456.43/x
  3. Step 3: Cross multiply
    290,836.11x = 436,263.89 × 80,456.43
  4. Step 4: Simplify right side
    290,836.11x = 35,100,236,217.97
  5. Step 5: Solve for x
    x = 35,100,236,217.97/290,836.11
  6. Step 6: Final answer
    x = 120,687.34

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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.