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Finding the Fourth Proportional to 440,722.20, 661,104.90 and 230,770.20

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Solution

The fourth proportional to 440,722.20, 661,104.90 and 230,770.20 is: 346,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,722.20 : 661,104.90 = 230,770.20 : x
  2. Step 2: Convert to fraction form
    440,722.20/661,104.90 = 230,770.20/x
  3. Step 3: Cross multiply
    440,722.20x = 661,104.90 × 230,770.20
  4. Step 4: Simplify right side
    440,722.20x = 152,563,309,993.98
  5. Step 5: Solve for x
    x = 152,563,309,993.98/440,722.20
  6. Step 6: Final answer
    x = 346,166.61

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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.