Home / 386,912.20-580,829.10-218,566.60

Finding the Fourth Proportional to 386,912.20, 580,829.10 and 218,566.60

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Solution

The fourth proportional to 386,912.20, 580,829.10 and 218,566.60 is: 328,110.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,912.20 : 580,829.10 = 218,566.60 : x
  2. Step 2: Convert to fraction form
    386,912.20/580,829.10 = 218,566.60/x
  3. Step 3: Cross multiply
    386,912.20x = 580,829.10 × 218,566.60
  4. Step 4: Simplify right side
    386,912.20x = 126,949,841,568.06
  5. Step 5: Solve for x
    x = 126,949,841,568.06/386,912.20
  6. Step 6: Final answer
    x = 328,110.21

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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.