Home / 285,311.11-393,724.51-157,983.97

Finding the Fourth Proportional to 285,311.11, 393,724.51 and 157,983.97

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Solution

The fourth proportional to 285,311.11, 393,724.51 and 157,983.97 is: 218,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,311.11 : 393,724.51 = 157,983.97 : x
  2. Step 2: Convert to fraction form
    285,311.11/393,724.51 = 157,983.97/x
  3. Step 3: Cross multiply
    285,311.11x = 393,724.51 × 157,983.97
  4. Step 4: Simplify right side
    285,311.11x = 62,202,161,176.10
  5. Step 5: Solve for x
    x = 62,202,161,176.10/285,311.11
  6. Step 6: Final answer
    x = 218,015.21

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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.