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Finding the Fourth Proportional to 230,458.80, 345,688.20 and 206,839.20

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Solution

The fourth proportional to 230,458.80, 345,688.20 and 206,839.20 is: 310,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,458.80 : 345,688.20 = 206,839.20 : x
  2. Step 2: Convert to fraction form
    230,458.80/345,688.20 = 206,839.20/x
  3. Step 3: Cross multiply
    230,458.80x = 345,688.20 × 206,839.20
  4. Step 4: Simplify right side
    230,458.80x = 71,501,870,737.44
  5. Step 5: Solve for x
    x = 71,501,870,737.44/230,458.80
  6. Step 6: Final answer
    x = 310,258.80

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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.