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Finding the Fourth Proportional to 259,083.90, 388,738.71 and 90,725.16

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Solution

The fourth proportional to 259,083.90, 388,738.71 and 90,725.16 is: 136,127.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,083.90 : 388,738.71 = 90,725.16 : x
  2. Step 2: Convert to fraction form
    259,083.90/388,738.71 = 90,725.16/x
  3. Step 3: Cross multiply
    259,083.90x = 388,738.71 × 90,725.16
  4. Step 4: Simplify right side
    259,083.90x = 35,268,381,662.94
  5. Step 5: Solve for x
    x = 35,268,381,662.94/259,083.90
  6. Step 6: Final answer
    x = 136,127.26

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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.