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Finding the Fourth Proportional to 443,269.80, 664,998.12 and 143,727.03

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Solution

The fourth proportional to 443,269.80, 664,998.12 and 143,727.03 is: 215,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,269.80 : 664,998.12 = 143,727.03 : x
  2. Step 2: Convert to fraction form
    443,269.80/664,998.12 = 143,727.03/x
  3. Step 3: Cross multiply
    443,269.80x = 664,998.12 × 143,727.03
  4. Step 4: Simplify right side
    443,269.80x = 95,578,204,743.18
  5. Step 5: Solve for x
    x = 95,578,204,743.18/443,269.80
  6. Step 6: Final answer
    x = 215,620.84

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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.