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Finding the Fourth Proportional to 443,375.60, 665,063.40 and 256,168.40

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Solution

The fourth proportional to 443,375.60, 665,063.40 and 256,168.40 is: 384,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,375.60 : 665,063.40 = 256,168.40 : x
  2. Step 2: Convert to fraction form
    443,375.60/665,063.40 = 256,168.40/x
  3. Step 3: Cross multiply
    443,375.60x = 665,063.40 × 256,168.40
  4. Step 4: Simplify right side
    443,375.60x = 170,368,227,076.56
  5. Step 5: Solve for x
    x = 170,368,227,076.56/443,375.60
  6. Step 6: Final answer
    x = 384,252.60

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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.