Home / 258,825.22-388,302.30-205,717.60

Finding the Fourth Proportional to 258,825.22, 388,302.30 and 205,717.60

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Solution

The fourth proportional to 258,825.22, 388,302.30 and 205,717.60 is: 308,627.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,825.22 : 388,302.30 = 205,717.60 : x
  2. Step 2: Convert to fraction form
    258,825.22/388,302.30 = 205,717.60/x
  3. Step 3: Cross multiply
    258,825.22x = 388,302.30 × 205,717.60
  4. Step 4: Simplify right side
    258,825.22x = 79,880,617,230.48
  5. Step 5: Solve for x
    x = 79,880,617,230.48/258,825.22
  6. Step 6: Final answer
    x = 308,627.64

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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.