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Finding the Fourth Proportional to 323,753.88, 485,215.20 and 155,021.37

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Solution

The fourth proportional to 323,753.88, 485,215.20 and 155,021.37 is: 232,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,753.88 : 485,215.20 = 155,021.37 : x
  2. Step 2: Convert to fraction form
    323,753.88/485,215.20 = 155,021.37/x
  3. Step 3: Cross multiply
    323,753.88x = 485,215.20 × 155,021.37
  4. Step 4: Simplify right side
    323,753.88x = 75,218,725,048.82
  5. Step 5: Solve for x
    x = 75,218,725,048.82/323,753.88
  6. Step 6: Final answer
    x = 232,333.05

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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.