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Finding the Fourth Proportional to 500,871.96, 751,395.42 and 220,381.92

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Solution

The fourth proportional to 500,871.96, 751,395.42 and 220,381.92 is: 330,611.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,871.96 : 751,395.42 = 220,381.92 : x
  2. Step 2: Convert to fraction form
    500,871.96/751,395.42 = 220,381.92/x
  3. Step 3: Cross multiply
    500,871.96x = 751,395.42 × 220,381.92
  4. Step 4: Simplify right side
    500,871.96x = 165,593,965,338.81
  5. Step 5: Solve for x
    x = 165,593,965,338.81/500,871.96
  6. Step 6: Final answer
    x = 330,611.37

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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.