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Finding the Fourth Proportional to 368,179.67, 551,383.76 and 209,928.35

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Solution

The fourth proportional to 368,179.67, 551,383.76 and 209,928.35 is: 314,387.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,179.67 : 551,383.76 = 209,928.35 : x
  2. Step 2: Convert to fraction form
    368,179.67/551,383.76 = 209,928.35/x
  3. Step 3: Cross multiply
    368,179.67x = 551,383.76 × 209,928.35
  4. Step 4: Simplify right side
    368,179.67x = 115,751,079,147.04
  5. Step 5: Solve for x
    x = 115,751,079,147.04/368,179.67
  6. Step 6: Final answer
    x = 314,387.49

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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.