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Finding the Fourth Proportional to 512,427.30, 768,640.95 and 180,003.30

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Solution

The fourth proportional to 512,427.30, 768,640.95 and 180,003.30 is: 270,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,427.30 : 768,640.95 = 180,003.30 : x
  2. Step 2: Convert to fraction form
    512,427.30/768,640.95 = 180,003.30/x
  3. Step 3: Cross multiply
    512,427.30x = 768,640.95 × 180,003.30
  4. Step 4: Simplify right side
    512,427.30x = 138,357,907,515.14
  5. Step 5: Solve for x
    x = 138,357,907,515.14/512,427.30
  6. Step 6: Final answer
    x = 270,004.95

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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.