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Finding the Fourth Proportional to 323,636.10, 485,376.36 and 165,783.30

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Solution

The fourth proportional to 323,636.10, 485,376.36 and 165,783.30 is: 248,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,636.10 : 485,376.36 = 165,783.30 : x
  2. Step 2: Convert to fraction form
    323,636.10/485,376.36 = 165,783.30/x
  3. Step 3: Cross multiply
    323,636.10x = 485,376.36 × 165,783.30
  4. Step 4: Simplify right side
    323,636.10x = 80,467,294,702.79
  5. Step 5: Solve for x
    x = 80,467,294,702.79/323,636.10
  6. Step 6: Final answer
    x = 248,635.10

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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.