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Finding the Fourth Proportional to 323,418.80, 485,128.20 and 181,701.20

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Solution

The fourth proportional to 323,418.80, 485,128.20 and 181,701.20 is: 272,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,418.80 : 485,128.20 = 181,701.20 : x
  2. Step 2: Convert to fraction form
    323,418.80/485,128.20 = 181,701.20/x
  3. Step 3: Cross multiply
    323,418.80x = 485,128.20 × 181,701.20
  4. Step 4: Simplify right side
    323,418.80x = 88,148,376,093.84
  5. Step 5: Solve for x
    x = 88,148,376,093.84/323,418.80
  6. Step 6: Final answer
    x = 272,551.80

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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.