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Finding the Fourth Proportional to 198,695.20, 298,042.80 and 163,674.40

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Solution

The fourth proportional to 198,695.20, 298,042.80 and 163,674.40 is: 245,511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,695.20 : 298,042.80 = 163,674.40 : x
  2. Step 2: Convert to fraction form
    198,695.20/298,042.80 = 163,674.40/x
  3. Step 3: Cross multiply
    198,695.20x = 298,042.80 × 163,674.40
  4. Step 4: Simplify right side
    198,695.20x = 48,781,976,464.32
  5. Step 5: Solve for x
    x = 48,781,976,464.32/198,695.20
  6. Step 6: Final answer
    x = 245,511.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.