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Finding the Fourth Proportional to 259,858.94, 389,474.48 and 126,539.42

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Solution

The fourth proportional to 259,858.94, 389,474.48 and 126,539.42 is: 189,656.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,858.94 : 389,474.48 = 126,539.42 : x
  2. Step 2: Convert to fraction form
    259,858.94/389,474.48 = 126,539.42/x
  3. Step 3: Cross multiply
    259,858.94x = 389,474.48 × 126,539.42
  4. Step 4: Simplify right side
    259,858.94x = 49,283,874,804.00
  5. Step 5: Solve for x
    x = 49,283,874,804.00/259,858.94
  6. Step 6: Final answer
    x = 189,656.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.