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Finding the Fourth Proportional to 352,139.73, 485,959.44 and 216,105.58

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Solution

The fourth proportional to 352,139.73, 485,959.44 and 216,105.58 is: 298,229.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,139.73 : 485,959.44 = 216,105.58 : x
  2. Step 2: Convert to fraction form
    352,139.73/485,959.44 = 216,105.58/x
  3. Step 3: Cross multiply
    352,139.73x = 485,959.44 × 216,105.58
  4. Step 4: Simplify right side
    352,139.73x = 105,018,546,637.68
  5. Step 5: Solve for x
    x = 105,018,546,637.68/352,139.73
  6. Step 6: Final answer
    x = 298,229.76

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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.