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Finding the Fourth Proportional to 198,809.60, 274,332.30 and 134,418.92

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Solution

The fourth proportional to 198,809.60, 274,332.30 and 134,418.92 is: 185,481.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,809.60 : 274,332.30 = 134,418.92 : x
  2. Step 2: Convert to fraction form
    198,809.60/274,332.30 = 134,418.92/x
  3. Step 3: Cross multiply
    198,809.60x = 274,332.30 × 134,418.92
  4. Step 4: Simplify right side
    198,809.60x = 36,875,451,487.12
  5. Step 5: Solve for x
    x = 36,875,451,487.12/198,809.60
  6. Step 6: Final answer
    x = 185,481.24

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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.