Home / 386,647.40-579,942.30-161,949.80

Finding the Fourth Proportional to 386,647.40, 579,942.30 and 161,949.80

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Solution

The fourth proportional to 386,647.40, 579,942.30 and 161,949.80 is: 242,912.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,647.40 : 579,942.30 = 161,949.80 : x
  2. Step 2: Convert to fraction form
    386,647.40/579,942.30 = 161,949.80/x
  3. Step 3: Cross multiply
    386,647.40x = 579,942.30 × 161,949.80
  4. Step 4: Simplify right side
    386,647.40x = 93,921,539,496.54
  5. Step 5: Solve for x
    x = 93,921,539,496.54/386,647.40
  6. Step 6: Final answer
    x = 242,912.64

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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.