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Finding the Fourth Proportional to 512,150.10, 768,225.15 and 325,986.90

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Solution

The fourth proportional to 512,150.10, 768,225.15 and 325,986.90 is: 488,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,150.10 : 768,225.15 = 325,986.90 : x
  2. Step 2: Convert to fraction form
    512,150.10/768,225.15 = 325,986.90/x
  3. Step 3: Cross multiply
    512,150.10x = 768,225.15 × 325,986.90
  4. Step 4: Simplify right side
    512,150.10x = 250,431,335,150.54
  5. Step 5: Solve for x
    x = 250,431,335,150.54/512,150.10
  6. Step 6: Final answer
    x = 488,980.35

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Double scale
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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.