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Finding the Fourth Proportional to 221,994,901.80, 332,992,352.70 and 218,593,679.40

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Solution

The fourth proportional to 221,994,901.80, 332,992,352.70 and 218,593,679.40 is: 327,890,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,994,901.80 : 332,992,352.70 = 218,593,679.40 : x
  2. Step 2: Convert to fraction form
    221,994,901.80/332,992,352.70 = 218,593,679.40/x
  3. Step 3: Cross multiply
    221,994,901.80x = 332,992,352.70 × 218,593,679.40
  4. Step 4: Simplify right side
    221,994,901.80x = 72,790,023,588,755,520
  5. Step 5: Solve for x
    x = 72,790,023,588,755,520/221,994,901.80
  6. Step 6: Final answer
    x = 327,890,519.10

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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.