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Finding the Fourth Proportional to 354,873.92, 489,734.39 and 193,730.18

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Solution

The fourth proportional to 354,873.92, 489,734.39 and 193,730.18 is: 267,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,873.92 : 489,734.39 = 193,730.18 : x
  2. Step 2: Convert to fraction form
    354,873.92/489,734.39 = 193,730.18/x
  3. Step 3: Cross multiply
    354,873.92x = 489,734.39 × 193,730.18
  4. Step 4: Simplify right side
    354,873.92x = 94,876,329,562.54
  5. Step 5: Solve for x
    x = 94,876,329,562.54/354,873.92
  6. Step 6: Final answer
    x = 267,352.22

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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.