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Finding the Fourth Proportional to 256,247.60, 384,371.40 and 231,364.40

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Solution

The fourth proportional to 256,247.60, 384,371.40 and 231,364.40 is: 347,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,247.60 : 384,371.40 = 231,364.40 : x
  2. Step 2: Convert to fraction form
    256,247.60/384,371.40 = 231,364.40/x
  3. Step 3: Cross multiply
    256,247.60x = 384,371.40 × 231,364.40
  4. Step 4: Simplify right side
    256,247.60x = 88,929,858,338.16
  5. Step 5: Solve for x
    x = 88,929,858,338.16/256,247.60
  6. Step 6: Final answer
    x = 347,046.60

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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.