Home / 258,824.22-388,300.80-205,716.60

Finding the Fourth Proportional to 258,824.22, 388,300.80 and 205,716.60

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Solution

The fourth proportional to 258,824.22, 388,300.80 and 205,716.60 is: 308,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,824.22 : 388,300.80 = 205,716.60 : x
  2. Step 2: Convert to fraction form
    258,824.22/388,300.80 = 205,716.60/x
  3. Step 3: Cross multiply
    258,824.22x = 388,300.80 × 205,716.60
  4. Step 4: Simplify right side
    258,824.22x = 79,879,920,353.28
  5. Step 5: Solve for x
    x = 79,879,920,353.28/258,824.22
  6. Step 6: Final answer
    x = 308,626.14

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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.