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Finding the Fourth Proportional to 323,814.10, 485,721.15 and 181,513.30

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Solution

The fourth proportional to 323,814.10, 485,721.15 and 181,513.30 is: 272,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,814.10 : 485,721.15 = 181,513.30 : x
  2. Step 2: Convert to fraction form
    323,814.10/485,721.15 = 181,513.30/x
  3. Step 3: Cross multiply
    323,814.10x = 485,721.15 × 181,513.30
  4. Step 4: Simplify right side
    323,814.10x = 88,164,848,816.30
  5. Step 5: Solve for x
    x = 88,164,848,816.30/323,814.10
  6. Step 6: Final answer
    x = 272,269.95

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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.