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Finding the Fourth Proportional to 428,436, 590,995.44 and 267,213.60

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Solution

The fourth proportional to 428,436, 590,995.44 and 267,213.60 is: 368,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,436 : 590,995.44 = 267,213.60 : x
  2. Step 2: Convert to fraction form
    428,436/590,995.44 = 267,213.60/x
  3. Step 3: Cross multiply
    428,436x = 590,995.44 × 267,213.60
  4. Step 4: Simplify right side
    428,436x = 157,922,019,105.98
  5. Step 5: Solve for x
    x = 157,922,019,105.98/428,436
  6. Step 6: Final answer
    x = 368,601.19

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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.