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Finding the Fourth Proportional to 259,383.41, 389,042.31 and 69,858.92

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Solution

The fourth proportional to 259,383.41, 389,042.31 and 69,858.92 is: 104,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,383.41 : 389,042.31 = 69,858.92 : x
  2. Step 2: Convert to fraction form
    259,383.41/389,042.31 = 69,858.92/x
  3. Step 3: Cross multiply
    259,383.41x = 389,042.31 × 69,858.92
  4. Step 4: Simplify right side
    259,383.41x = 27,178,075,610.91
  5. Step 5: Solve for x
    x = 27,178,075,610.91/259,383.41
  6. Step 6: Final answer
    x = 104,779.54

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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.