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Finding the Fourth Proportional to 422,270.80, 582,611.56 and 238,499.60

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Solution

The fourth proportional to 422,270.80, 582,611.56 and 238,499.60 is: 329,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,270.80 : 582,611.56 = 238,499.60 : x
  2. Step 2: Convert to fraction form
    422,270.80/582,611.56 = 238,499.60/x
  3. Step 3: Cross multiply
    422,270.80x = 582,611.56 × 238,499.60
  4. Step 4: Simplify right side
    422,270.80x = 138,952,620,506.07
  5. Step 5: Solve for x
    x = 138,952,620,506.07/422,270.80
  6. Step 6: Final answer
    x = 329,060.45

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1.5x scale

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.