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Finding the Fourth Proportional to 451,104.96, 676,445.55 and 261,619.20

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Solution

The fourth proportional to 451,104.96, 676,445.55 and 261,619.20 is: 392,305.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,104.96 : 676,445.55 = 261,619.20 : x
  2. Step 2: Convert to fraction form
    451,104.96/676,445.55 = 261,619.20/x
  3. Step 3: Cross multiply
    451,104.96x = 676,445.55 × 261,619.20
  4. Step 4: Simplify right side
    451,104.96x = 176,971,143,634.56
  5. Step 5: Solve for x
    x = 176,971,143,634.56/451,104.96
  6. Step 6: Final answer
    x = 392,305.91

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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.