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Finding the Fourth Proportional to 443,021.40, 664,532.10 and 275,059.80

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Solution

The fourth proportional to 443,021.40, 664,532.10 and 275,059.80 is: 412,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,021.40 : 664,532.10 = 275,059.80 : x
  2. Step 2: Convert to fraction form
    443,021.40/664,532.10 = 275,059.80/x
  3. Step 3: Cross multiply
    443,021.40x = 664,532.10 × 275,059.80
  4. Step 4: Simplify right side
    443,021.40x = 182,786,066,519.58
  5. Step 5: Solve for x
    x = 182,786,066,519.58/443,021.40
  6. Step 6: Final answer
    x = 412,589.70

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1.5x scale

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.