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Finding the Fourth Proportional to 371,076.75, 511,769.73 and 285,243.48

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Solution

The fourth proportional to 371,076.75, 511,769.73 and 285,243.48 is: 393,392.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,076.75 : 511,769.73 = 285,243.48 : x
  2. Step 2: Convert to fraction form
    371,076.75/511,769.73 = 285,243.48/x
  3. Step 3: Cross multiply
    371,076.75x = 511,769.73 × 285,243.48
  4. Step 4: Simplify right side
    371,076.75x = 145,978,978,743.86
  5. Step 5: Solve for x
    x = 145,978,978,743.86/371,076.75
  6. Step 6: Final answer
    x = 393,392.95

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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.