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Finding the Fourth Proportional to 512,213.40, 768,320.10 and 246,492.90

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Solution

The fourth proportional to 512,213.40, 768,320.10 and 246,492.90 is: 369,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,213.40 : 768,320.10 = 246,492.90 : x
  2. Step 2: Convert to fraction form
    512,213.40/768,320.10 = 246,492.90/x
  3. Step 3: Cross multiply
    512,213.40x = 768,320.10 × 246,492.90
  4. Step 4: Simplify right side
    512,213.40x = 189,385,449,577.29
  5. Step 5: Solve for x
    x = 189,385,449,577.29/512,213.40
  6. Step 6: Final answer
    x = 369,739.35

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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.