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Finding the Fourth Proportional to 352,320.56, 485,531.20 and 345,842.80

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Solution

The fourth proportional to 352,320.56, 485,531.20 and 345,842.80 is: 476,604.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,320.56 : 485,531.20 = 345,842.80 : x
  2. Step 2: Convert to fraction form
    352,320.56/485,531.20 = 345,842.80/x
  3. Step 3: Cross multiply
    352,320.56x = 485,531.20 × 345,842.80
  4. Step 4: Simplify right side
    352,320.56x = 167,917,469,695.36
  5. Step 5: Solve for x
    x = 167,917,469,695.36/352,320.56
  6. Step 6: Final answer
    x = 476,604.23

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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.