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Finding the Fourth Proportional to 215,081.94, 321,991.98 and 150,817.26

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Solution

The fourth proportional to 215,081.94, 321,991.98 and 150,817.26 is: 225,783.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,081.94 : 321,991.98 = 150,817.26 : x
  2. Step 2: Convert to fraction form
    215,081.94/321,991.98 = 150,817.26/x
  3. Step 3: Cross multiply
    215,081.94x = 321,991.98 × 150,817.26
  4. Step 4: Simplify right side
    215,081.94x = 48,561,948,165.57
  5. Step 5: Solve for x
    x = 48,561,948,165.57/215,081.94
  6. Step 6: Final answer
    x = 225,783.48

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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.