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Finding the Fourth Proportional to 313,321.87, 432,392.02 and 170,081.90

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Solution

The fourth proportional to 313,321.87, 432,392.02 and 170,081.90 is: 234,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,321.87 : 432,392.02 = 170,081.90 : x
  2. Step 2: Convert to fraction form
    313,321.87/432,392.02 = 170,081.90/x
  3. Step 3: Cross multiply
    313,321.87x = 432,392.02 × 170,081.90
  4. Step 4: Simplify right side
    313,321.87x = 73,542,055,456.03
  5. Step 5: Solve for x
    x = 73,542,055,456.03/313,321.87
  6. Step 6: Final answer
    x = 234,717.27

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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.