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Finding the Fourth Proportional to 323,858.20, 485,009.70 and 261,650.20

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Solution

The fourth proportional to 323,858.20, 485,009.70 and 261,650.20 is: 391,847.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,858.20 : 485,009.70 = 261,650.20 : x
  2. Step 2: Convert to fraction form
    323,858.20/485,009.70 = 261,650.20/x
  3. Step 3: Cross multiply
    323,858.20x = 485,009.70 × 261,650.20
  4. Step 4: Simplify right side
    323,858.20x = 126,902,885,006.94
  5. Step 5: Solve for x
    x = 126,902,885,006.94/323,858.20
  6. Step 6: Final answer
    x = 391,847.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.