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Finding the Fourth Proportional to 443,268.80, 664,996.62 and 143,726.03

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Solution

The fourth proportional to 443,268.80, 664,996.62 and 143,726.03 is: 215,619.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,268.80 : 664,996.62 = 143,726.03 : x
  2. Step 2: Convert to fraction form
    443,268.80/664,996.62 = 143,726.03/x
  3. Step 3: Cross multiply
    443,268.80x = 664,996.62 × 143,726.03
  4. Step 4: Simplify right side
    443,268.80x = 95,577,324,156.02
  5. Step 5: Solve for x
    x = 95,577,324,156.02/443,268.80
  6. Step 6: Final answer
    x = 215,619.34

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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.