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Finding the Fourth Proportional to 428,080.26, 590,749.42 and 246,791.28

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Solution

The fourth proportional to 428,080.26, 590,749.42 and 246,791.28 is: 340,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,080.26 : 590,749.42 = 246,791.28 : x
  2. Step 2: Convert to fraction form
    428,080.26/590,749.42 = 246,791.28/x
  3. Step 3: Cross multiply
    428,080.26x = 590,749.42 × 246,791.28
  4. Step 4: Simplify right side
    428,080.26x = 145,791,805,521.06
  5. Step 5: Solve for x
    x = 145,791,805,521.06/428,080.26
  6. Step 6: Final answer
    x = 340,571.19

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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.