Home / 290,836.05-436,263.80-80,456.37

Finding the Fourth Proportional to 290,836.05, 436,263.80 and 80,456.37

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Solution

The fourth proportional to 290,836.05, 436,263.80 and 80,456.37 is: 120,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,836.05 : 436,263.80 = 80,456.37 : x
  2. Step 2: Convert to fraction form
    290,836.05/436,263.80 = 80,456.37/x
  3. Step 3: Cross multiply
    290,836.05x = 436,263.80 × 80,456.37
  4. Step 4: Simplify right side
    290,836.05x = 35,100,201,710.41
  5. Step 5: Solve for x
    x = 35,100,201,710.41/290,836.05
  6. Step 6: Final answer
    x = 120,687.25

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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.