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Finding the Fourth Proportional to 323,513.10, 485,269.65 and 164,080.80

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Solution

The fourth proportional to 323,513.10, 485,269.65 and 164,080.80 is: 246,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,513.10 : 485,269.65 = 164,080.80 : x
  2. Step 2: Convert to fraction form
    323,513.10/485,269.65 = 164,080.80/x
  3. Step 3: Cross multiply
    323,513.10x = 485,269.65 × 164,080.80
  4. Step 4: Simplify right side
    323,513.10x = 79,623,432,387.72
  5. Step 5: Solve for x
    x = 79,623,432,387.72/323,513.10
  6. Step 6: Final answer
    x = 246,121.20

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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.