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Finding the Fourth Proportional to 547,456.40, 821,645.40 and 267,213.20

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Solution

The fourth proportional to 547,456.40, 821,645.40 and 267,213.20 is: 401,044.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,456.40 : 821,645.40 = 267,213.20 : x
  2. Step 2: Convert to fraction form
    547,456.40/821,645.40 = 267,213.20/x
  3. Step 3: Cross multiply
    547,456.40x = 821,645.40 × 267,213.20
  4. Step 4: Simplify right side
    547,456.40x = 219,554,496,599.28
  5. Step 5: Solve for x
    x = 219,554,496,599.28/547,456.40
  6. Step 6: Final answer
    x = 401,044.72

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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.