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Finding the Fourth Proportional to 308,999.39, 426,383.92 and 173,014.43

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Solution

The fourth proportional to 308,999.39, 426,383.92 and 173,014.43 is: 238,740.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,999.39 : 426,383.92 = 173,014.43 : x
  2. Step 2: Convert to fraction form
    308,999.39/426,383.92 = 173,014.43/x
  3. Step 3: Cross multiply
    308,999.39x = 426,383.92 × 173,014.43
  4. Step 4: Simplify right side
    308,999.39x = 73,770,571,513.39
  5. Step 5: Solve for x
    x = 73,770,571,513.39/308,999.39
  6. Step 6: Final answer
    x = 238,740.18

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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.