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Finding the Fourth Proportional to 481,911.25, 665,052.11 and 267,031.21

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Solution

The fourth proportional to 481,911.25, 665,052.11 and 267,031.21 is: 368,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,911.25 : 665,052.11 = 267,031.21 : x
  2. Step 2: Convert to fraction form
    481,911.25/665,052.11 = 267,031.21/x
  3. Step 3: Cross multiply
    481,911.25x = 665,052.11 × 267,031.21
  4. Step 4: Simplify right side
    481,911.25x = 177,589,669,646.35
  5. Step 5: Solve for x
    x = 177,589,669,646.35/481,911.25
  6. Step 6: Final answer
    x = 368,511.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.