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Finding the Fourth Proportional to 521,107.40, 781,661.10 and 205,523.30

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Solution

The fourth proportional to 521,107.40, 781,661.10 and 205,523.30 is: 308,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,107.40 : 781,661.10 = 205,523.30 : x
  2. Step 2: Convert to fraction form
    521,107.40/781,661.10 = 205,523.30/x
  3. Step 3: Cross multiply
    521,107.40x = 781,661.10 × 205,523.30
  4. Step 4: Simplify right side
    521,107.40x = 160,649,568,753.63
  5. Step 5: Solve for x
    x = 160,649,568,753.63/521,107.40
  6. Step 6: Final answer
    x = 308,284.95

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Similar ratio
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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.