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Finding the Fourth Proportional to 443,008.20, 664,512.30 and 162,634.80

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Solution

The fourth proportional to 443,008.20, 664,512.30 and 162,634.80 is: 243,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,008.20 : 664,512.30 = 162,634.80 : x
  2. Step 2: Convert to fraction form
    443,008.20/664,512.30 = 162,634.80/x
  3. Step 3: Cross multiply
    443,008.20x = 664,512.30 × 162,634.80
  4. Step 4: Simplify right side
    443,008.20x = 108,072,825,008.04
  5. Step 5: Solve for x
    x = 108,072,825,008.04/443,008.20
  6. Step 6: Final answer
    x = 243,952.20

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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.