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Finding the Fourth Proportional to 370,487.54, 511,273.30 and 200,721.66

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Solution

The fourth proportional to 370,487.54, 511,273.30 and 200,721.66 is: 276,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,487.54 : 511,273.30 = 200,721.66 : x
  2. Step 2: Convert to fraction form
    370,487.54/511,273.30 = 200,721.66/x
  3. Step 3: Cross multiply
    370,487.54x = 511,273.30 × 200,721.66
  4. Step 4: Simplify right side
    370,487.54x = 102,623,625,489.68
  5. Step 5: Solve for x
    x = 102,623,625,489.68/370,487.54
  6. Step 6: Final answer
    x = 276,996.16

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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.