Home / 290,836.24-436,264.08-80,456.56

Finding the Fourth Proportional to 290,836.24, 436,264.08 and 80,456.56

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Solution

The fourth proportional to 290,836.24, 436,264.08 and 80,456.56 is: 120,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,836.24 : 436,264.08 = 80,456.56 : x
  2. Step 2: Convert to fraction form
    290,836.24/436,264.08 = 80,456.56/x
  3. Step 3: Cross multiply
    290,836.24x = 436,264.08 × 80,456.56
  4. Step 4: Simplify right side
    290,836.24x = 35,100,305,836.56
  5. Step 5: Solve for x
    x = 35,100,305,836.56/290,836.24
  6. Step 6: Final answer
    x = 120,687.53

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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.