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Finding the Fourth Proportional to 370,487.79, 511,273.65 and 200,721.92

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Solution

The fourth proportional to 370,487.79, 511,273.65 and 200,721.92 is: 276,996.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,487.79 : 511,273.65 = 200,721.92 : x
  2. Step 2: Convert to fraction form
    370,487.79/511,273.65 = 200,721.92/x
  3. Step 3: Cross multiply
    370,487.79x = 511,273.65 × 200,721.92
  4. Step 4: Simplify right side
    370,487.79x = 102,623,826,869.75
  5. Step 5: Solve for x
    x = 102,623,826,869.75/370,487.79
  6. Step 6: Final answer
    x = 276,996.52

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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.