Home / 257,200.20-386,189.10-198,102.60

Finding the Fourth Proportional to 257,200.20, 386,189.10 and 198,102.60

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Solution

The fourth proportional to 257,200.20, 386,189.10 and 198,102.60 is: 297,453.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,200.20 : 386,189.10 = 198,102.60 : x
  2. Step 2: Convert to fraction form
    257,200.20/386,189.10 = 198,102.60/x
  3. Step 3: Cross multiply
    257,200.20x = 386,189.10 × 198,102.60
  4. Step 4: Simplify right side
    257,200.20x = 76,505,064,801.66
  5. Step 5: Solve for x
    x = 76,505,064,801.66/257,200.20
  6. Step 6: Final answer
    x = 297,453.36

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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.