Home / 259,326.20-388,989.30-206,838.20

Finding the Fourth Proportional to 259,326.20, 388,989.30 and 206,838.20

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Solution

The fourth proportional to 259,326.20, 388,989.30 and 206,838.20 is: 310,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,326.20 : 388,989.30 = 206,838.20 : x
  2. Step 2: Convert to fraction form
    259,326.20/388,989.30 = 206,838.20/x
  3. Step 3: Cross multiply
    259,326.20x = 388,989.30 × 206,838.20
  4. Step 4: Simplify right side
    259,326.20x = 80,457,846,631.26
  5. Step 5: Solve for x
    x = 80,457,846,631.26/259,326.20
  6. Step 6: Final answer
    x = 310,257.30

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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.