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Finding the Fourth Proportional to 325,044.80, 447,286.56 and 287,408.96

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Solution

The fourth proportional to 325,044.80, 447,286.56 and 287,408.96 is: 395,496.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,044.80 : 447,286.56 = 287,408.96 : x
  2. Step 2: Convert to fraction form
    325,044.80/447,286.56 = 287,408.96/x
  3. Step 3: Cross multiply
    325,044.80x = 447,286.56 × 287,408.96
  4. Step 4: Simplify right side
    325,044.80x = 128,554,165,031.58
  5. Step 5: Solve for x
    x = 128,554,165,031.58/325,044.80
  6. Step 6: Final answer
    x = 395,496.76

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1.5x scale

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.