Home / 285,670.20-428,198.10-108,108.60

Finding the Fourth Proportional to 285,670.20, 428,198.10 and 108,108.60

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Solution

The fourth proportional to 285,670.20, 428,198.10 and 108,108.60 is: 162,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,670.20 : 428,198.10 = 108,108.60 : x
  2. Step 2: Convert to fraction form
    285,670.20/428,198.10 = 108,108.60/x
  3. Step 3: Cross multiply
    285,670.20x = 428,198.10 × 108,108.60
  4. Step 4: Simplify right side
    285,670.20x = 46,291,897,113.66
  5. Step 5: Solve for x
    x = 46,291,897,113.66/285,670.20
  6. Step 6: Final answer
    x = 162,046.64

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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.