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Finding the Fourth Proportional to 323,440.34, 485,137.76 and 120,997.82

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Solution

The fourth proportional to 323,440.34, 485,137.76 and 120,997.82 is: 181,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,440.34 : 485,137.76 = 120,997.82 : x
  2. Step 2: Convert to fraction form
    323,440.34/485,137.76 = 120,997.82/x
  3. Step 3: Cross multiply
    323,440.34x = 485,137.76 × 120,997.82
  4. Step 4: Simplify right side
    323,440.34x = 58,700,611,359.68
  5. Step 5: Solve for x
    x = 58,700,611,359.68/323,440.34
  6. Step 6: Final answer
    x = 181,488.22

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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.