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Finding the Fourth Proportional to 202,323.80, 303,485.70 and 69,192.20

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Solution

The fourth proportional to 202,323.80, 303,485.70 and 69,192.20 is: 103,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,323.80 : 303,485.70 = 69,192.20 : x
  2. Step 2: Convert to fraction form
    202,323.80/303,485.70 = 69,192.20/x
  3. Step 3: Cross multiply
    202,323.80x = 303,485.70 × 69,192.20
  4. Step 4: Simplify right side
    202,323.80x = 20,998,843,251.54
  5. Step 5: Solve for x
    x = 20,998,843,251.54/202,323.80
  6. Step 6: Final answer
    x = 103,788.30

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1.5x scale

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.