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Finding the Fourth Proportional to 440,763.22, 661,108.06 and 312,147.78

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Solution

The fourth proportional to 440,763.22, 661,108.06 and 312,147.78 is: 468,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,763.22 : 661,108.06 = 312,147.78 : x
  2. Step 2: Convert to fraction form
    440,763.22/661,108.06 = 312,147.78/x
  3. Step 3: Cross multiply
    440,763.22x = 661,108.06 × 312,147.78
  4. Step 4: Simplify right side
    440,763.22x = 206,363,413,269.11
  5. Step 5: Solve for x
    x = 206,363,413,269.11/440,763.22
  6. Step 6: Final answer
    x = 468,195.63

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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.