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Finding the Fourth Proportional to 393,443.52, 590,161.44 and 112,960.32

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Solution

The fourth proportional to 393,443.52, 590,161.44 and 112,960.32 is: 169,439.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,443.52 : 590,161.44 = 112,960.32 : x
  2. Step 2: Convert to fraction form
    393,443.52/590,161.44 = 112,960.32/x
  3. Step 3: Cross multiply
    393,443.52x = 590,161.44 × 112,960.32
  4. Step 4: Simplify right side
    393,443.52x = 66,664,825,114.06
  5. Step 5: Solve for x
    x = 66,664,825,114.06/393,443.52
  6. Step 6: Final answer
    x = 169,439.38

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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.