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Finding the Fourth Proportional to 202,311.40, 303,139.05 and 127,297.30

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Solution

The fourth proportional to 202,311.40, 303,139.05 and 127,297.30 is: 190,739.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,311.40 : 303,139.05 = 127,297.30 : x
  2. Step 2: Convert to fraction form
    202,311.40/303,139.05 = 127,297.30/x
  3. Step 3: Cross multiply
    202,311.40x = 303,139.05 × 127,297.30
  4. Step 4: Simplify right side
    202,311.40x = 38,588,782,589.57
  5. Step 5: Solve for x
    x = 38,588,782,589.57/202,311.40
  6. Step 6: Final answer
    x = 190,739.54

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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.