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Finding the Fourth Proportional to 352,138.73, 485,958.06 and 216,104.58

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Solution

The fourth proportional to 352,138.73, 485,958.06 and 216,104.58 is: 298,228.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,138.73 : 485,958.06 = 216,104.58 : x
  2. Step 2: Convert to fraction form
    352,138.73/485,958.06 = 216,104.58/x
  3. Step 3: Cross multiply
    352,138.73x = 485,958.06 × 216,104.58
  4. Step 4: Simplify right side
    352,138.73x = 105,017,762,453.92
  5. Step 5: Solve for x
    x = 105,017,762,453.92/352,138.73
  6. Step 6: Final answer
    x = 298,228.38

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1.5x scale

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.