Home / 258,768.17-388,029.42-90,268.02

Finding the Fourth Proportional to 258,768.17, 388,029.42 and 90,268.02

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Solution

The fourth proportional to 258,768.17, 388,029.42 and 90,268.02 is: 135,359.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,768.17 : 388,029.42 = 90,268.02 : x
  2. Step 2: Convert to fraction form
    258,768.17/388,029.42 = 90,268.02/x
  3. Step 3: Cross multiply
    258,768.17x = 388,029.42 × 90,268.02
  4. Step 4: Simplify right side
    258,768.17x = 35,026,647,445.15
  5. Step 5: Solve for x
    x = 35,026,647,445.15/258,768.17
  6. Step 6: Final answer
    x = 135,359.18

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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.