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Finding the Fourth Proportional to 202,474.80, 303,712.20 and 90,154.80

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Solution

The fourth proportional to 202,474.80, 303,712.20 and 90,154.80 is: 135,232.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,474.80 : 303,712.20 = 90,154.80 : x
  2. Step 2: Convert to fraction form
    202,474.80/303,712.20 = 90,154.80/x
  3. Step 3: Cross multiply
    202,474.80x = 303,712.20 × 90,154.80
  4. Step 4: Simplify right side
    202,474.80x = 27,381,112,648.56
  5. Step 5: Solve for x
    x = 27,381,112,648.56/202,474.80
  6. Step 6: Final answer
    x = 135,232.20

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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.