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Finding the Fourth Proportional to 352,160.42, 485,977.78 and 191,012

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Solution

The fourth proportional to 352,160.42, 485,977.78 and 191,012 is: 263,594.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,160.42 : 485,977.78 = 191,012 : x
  2. Step 2: Convert to fraction form
    352,160.42/485,977.78 = 191,012/x
  3. Step 3: Cross multiply
    352,160.42x = 485,977.78 × 191,012
  4. Step 4: Simplify right side
    352,160.42x = 92,827,587,713.36
  5. Step 5: Solve for x
    x = 92,827,587,713.36/352,160.42
  6. Step 6: Final answer
    x = 263,594.61

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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.