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Finding the Fourth Proportional to 308,042.39, 427,273.28 and 299,849.24

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Solution

The fourth proportional to 308,042.39, 427,273.28 and 299,849.24 is: 415,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,042.39 : 427,273.28 = 299,849.24 : x
  2. Step 2: Convert to fraction form
    308,042.39/427,273.28 = 299,849.24/x
  3. Step 3: Cross multiply
    308,042.39x = 427,273.28 × 299,849.24
  4. Step 4: Simplify right side
    308,042.39x = 128,117,568,280.31
  5. Step 5: Solve for x
    x = 128,117,568,280.31/308,042.39
  6. Step 6: Final answer
    x = 415,908.89

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.