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Finding the Fourth Proportional to 256,912.20, 385,368.30 and 246,414.60

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Solution

The fourth proportional to 256,912.20, 385,368.30 and 246,414.60 is: 369,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,912.20 : 385,368.30 = 246,414.60 : x
  2. Step 2: Convert to fraction form
    256,912.20/385,368.30 = 246,414.60/x
  3. Step 3: Cross multiply
    256,912.20x = 385,368.30 × 246,414.60
  4. Step 4: Simplify right side
    256,912.20x = 94,960,375,497.18
  5. Step 5: Solve for x
    x = 94,960,375,497.18/256,912.20
  6. Step 6: Final answer
    x = 369,621.90

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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.