Home / 285,441.11-428,087.86-135,382.84

Finding the Fourth Proportional to 285,441.11, 428,087.86 and 135,382.84

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Solution

The fourth proportional to 285,441.11, 428,087.86 and 135,382.84 is: 203,039.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,441.11 : 428,087.86 = 135,382.84 : x
  2. Step 2: Convert to fraction form
    285,441.11/428,087.86 = 135,382.84/x
  3. Step 3: Cross multiply
    285,441.11x = 428,087.86 × 135,382.84
  4. Step 4: Simplify right side
    285,441.11x = 57,955,751,636.40
  5. Step 5: Solve for x
    x = 57,955,751,636.40/285,441.11
  6. Step 6: Final answer
    x = 203,039.26

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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.