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Finding the Fourth Proportional to 422,377.40, 582,880.78 and 252,611.52

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Solution

The fourth proportional to 422,377.40, 582,880.78 and 252,611.52 is: 348,603.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,377.40 : 582,880.78 = 252,611.52 : x
  2. Step 2: Convert to fraction form
    422,377.40/582,880.78 = 252,611.52/x
  3. Step 3: Cross multiply
    422,377.40x = 582,880.78 × 252,611.52
  4. Step 4: Simplify right side
    422,377.40x = 147,242,399,814.59
  5. Step 5: Solve for x
    x = 147,242,399,814.59/422,377.40
  6. Step 6: Final answer
    x = 348,603.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.