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Finding the Fourth Proportional to 395,361.03, 545,576.61 and 231,995.54

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Solution

The fourth proportional to 395,361.03, 545,576.61 and 231,995.54 is: 320,141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,361.03 : 545,576.61 = 231,995.54 : x
  2. Step 2: Convert to fraction form
    395,361.03/545,576.61 = 231,995.54/x
  3. Step 3: Cross multiply
    395,361.03x = 545,576.61 × 231,995.54
  4. Step 4: Simplify right side
    395,361.03x = 126,571,340,248.32
  5. Step 5: Solve for x
    x = 126,571,340,248.32/395,361.03
  6. Step 6: Final answer
    x = 320,141.16

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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.