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Finding the Fourth Proportional to 370,487.67, 511,273.52 and 200,721.79

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Solution

The fourth proportional to 370,487.67, 511,273.52 and 200,721.79 is: 276,996.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,487.67 : 511,273.52 = 200,721.79 : x
  2. Step 2: Convert to fraction form
    370,487.67/511,273.52 = 200,721.79/x
  3. Step 3: Cross multiply
    370,487.67x = 511,273.52 × 200,721.79
  4. Step 4: Simplify right side
    370,487.67x = 102,623,736,114.00
  5. Step 5: Solve for x
    x = 102,623,736,114.00/370,487.67
  6. Step 6: Final answer
    x = 276,996.36

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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.