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Finding the Fourth Proportional to 393,974.28, 590,974.38 and 127,737

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Solution

The fourth proportional to 393,974.28, 590,974.38 and 127,737 is: 191,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,974.28 : 590,974.38 = 127,737 : x
  2. Step 2: Convert to fraction form
    393,974.28/590,974.38 = 127,737/x
  3. Step 3: Cross multiply
    393,974.28x = 590,974.38 × 127,737
  4. Step 4: Simplify right side
    393,974.28x = 75,489,294,378.06
  5. Step 5: Solve for x
    x = 75,489,294,378.06/393,974.28
  6. Step 6: Final answer
    x = 191,609.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.