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Finding the Fourth Proportional to 202,169.20, 303,503.40 and 127,289.20

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Solution

The fourth proportional to 202,169.20, 303,503.40 and 127,289.20 is: 191,090.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,169.20 : 303,503.40 = 127,289.20 : x
  2. Step 2: Convert to fraction form
    202,169.20/303,503.40 = 127,289.20/x
  3. Step 3: Cross multiply
    202,169.20x = 303,503.40 × 127,289.20
  4. Step 4: Simplify right side
    202,169.20x = 38,632,704,983.28
  5. Step 5: Solve for x
    x = 38,632,704,983.28/202,169.20
  6. Step 6: Final answer
    x = 191,090.95

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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.