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Finding the Fourth Proportional to 308,993.16, 426,453.75 and 223,229.61

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Solution

The fourth proportional to 308,993.16, 426,453.75 and 223,229.61 is: 308,088.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,993.16 : 426,453.75 = 223,229.61 : x
  2. Step 2: Convert to fraction form
    308,993.16/426,453.75 = 223,229.61/x
  3. Step 3: Cross multiply
    308,993.16x = 426,453.75 × 223,229.61
  4. Step 4: Simplify right side
    308,993.16x = 95,197,104,295.54
  5. Step 5: Solve for x
    x = 95,197,104,295.54/308,993.16
  6. Step 6: Final answer
    x = 308,088.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.