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Finding the Fourth Proportional to 202,028.80, 303,043.20 and 89,708.80

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Solution

The fourth proportional to 202,028.80, 303,043.20 and 89,708.80 is: 134,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,028.80 : 303,043.20 = 89,708.80 : x
  2. Step 2: Convert to fraction form
    202,028.80/303,043.20 = 89,708.80/x
  3. Step 3: Cross multiply
    202,028.80x = 303,043.20 × 89,708.80
  4. Step 4: Simplify right side
    202,028.80x = 27,185,641,820.16
  5. Step 5: Solve for x
    x = 27,185,641,820.16/202,028.80
  6. Step 6: Final answer
    x = 134,563.20

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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.