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Finding the Fourth Proportional to 443,748.60, 665,234.10 and 266,326.20

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Solution

The fourth proportional to 443,748.60, 665,234.10 and 266,326.20 is: 399,255.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,748.60 : 665,234.10 = 266,326.20 : x
  2. Step 2: Convert to fraction form
    443,748.60/665,234.10 = 266,326.20/x
  3. Step 3: Cross multiply
    443,748.60x = 665,234.10 × 266,326.20
  4. Step 4: Simplify right side
    443,748.60x = 177,169,269,963.42
  5. Step 5: Solve for x
    x = 177,169,269,963.42/443,748.60
  6. Step 6: Final answer
    x = 399,255.95

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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.