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Finding the Fourth Proportional to 323,640.10, 485,382.30 and 165,787.30

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Solution

The fourth proportional to 323,640.10, 485,382.30 and 165,787.30 is: 248,641.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,640.10 : 485,382.30 = 165,787.30 : x
  2. Step 2: Convert to fraction form
    323,640.10/485,382.30 = 165,787.30/x
  3. Step 3: Cross multiply
    323,640.10x = 485,382.30 × 165,787.30
  4. Step 4: Simplify right side
    323,640.10x = 80,470,220,984.79
  5. Step 5: Solve for x
    x = 80,470,220,984.79/323,640.10
  6. Step 6: Final answer
    x = 248,641.07

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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.