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Finding the Fourth Proportional to 443,025.40, 664,538.10 and 275,063.80

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Solution

The fourth proportional to 443,025.40, 664,538.10 and 275,063.80 is: 412,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,025.40 : 664,538.10 = 275,063.80 : x
  2. Step 2: Convert to fraction form
    443,025.40/664,538.10 = 275,063.80/x
  3. Step 3: Cross multiply
    443,025.40x = 664,538.10 × 275,063.80
  4. Step 4: Simplify right side
    443,025.40x = 182,790,375,030.78
  5. Step 5: Solve for x
    x = 182,790,375,030.78/443,025.40
  6. Step 6: Final answer
    x = 412,595.70

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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.