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Finding the Fourth Proportional to 443,455.40, 664,308.30 and 265,433.60

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Solution

The fourth proportional to 443,455.40, 664,308.30 and 265,433.60 is: 397,626.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,455.40 : 664,308.30 = 265,433.60 : x
  2. Step 2: Convert to fraction form
    443,455.40/664,308.30 = 265,433.60/x
  3. Step 3: Cross multiply
    443,455.40x = 664,308.30 × 265,433.60
  4. Step 4: Simplify right side
    443,455.40x = 176,329,743,578.88
  5. Step 5: Solve for x
    x = 176,329,743,578.88/443,455.40
  6. Step 6: Final answer
    x = 397,626.78

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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.