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Finding the Fourth Proportional to 256,936.20, 385,404.30 and 246,438.60

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Solution

The fourth proportional to 256,936.20, 385,404.30 and 246,438.60 is: 369,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,936.20 : 385,404.30 = 246,438.60 : x
  2. Step 2: Convert to fraction form
    256,936.20/385,404.30 = 246,438.60/x
  3. Step 3: Cross multiply
    256,936.20x = 385,404.30 × 246,438.60
  4. Step 4: Simplify right side
    256,936.20x = 94,978,496,125.98
  5. Step 5: Solve for x
    x = 94,978,496,125.98/256,936.20
  6. Step 6: Final answer
    x = 369,657.90

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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.