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Finding the Fourth Proportional to 512,162.10, 768,243.15 and 325,998.90

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Solution

The fourth proportional to 512,162.10, 768,243.15 and 325,998.90 is: 488,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,162.10 : 768,243.15 = 325,998.90 : x
  2. Step 2: Convert to fraction form
    512,162.10/768,243.15 = 325,998.90/x
  3. Step 3: Cross multiply
    512,162.10x = 768,243.15 × 325,998.90
  4. Step 4: Simplify right side
    512,162.10x = 250,446,421,832.54
  5. Step 5: Solve for x
    x = 250,446,421,832.54/512,162.10
  6. Step 6: Final answer
    x = 488,998.35

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Similar ratio
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1.5x scale

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.