Home / 259,291.15-388,846.77-90,807.75

Finding the Fourth Proportional to 259,291.15, 388,846.77 and 90,807.75

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Solution

The fourth proportional to 259,291.15, 388,846.77 and 90,807.75 is: 136,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,291.15 : 388,846.77 = 90,807.75 : x
  2. Step 2: Convert to fraction form
    259,291.15/388,846.77 = 90,807.75/x
  3. Step 3: Cross multiply
    259,291.15x = 388,846.77 × 90,807.75
  4. Step 4: Simplify right side
    259,291.15x = 35,310,301,736.64
  5. Step 5: Solve for x
    x = 35,310,301,736.64/259,291.15
  6. Step 6: Final answer
    x = 136,180.13

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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.