Home / 285,836.20-428,447.10-108,274.60

Finding the Fourth Proportional to 285,836.20, 428,447.10 and 108,274.60

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Solution

The fourth proportional to 285,836.20, 428,447.10 and 108,274.60 is: 162,295.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,836.20 : 428,447.10 = 108,274.60 : x
  2. Step 2: Convert to fraction form
    285,836.20/428,447.10 = 108,274.60/x
  3. Step 3: Cross multiply
    285,836.20x = 428,447.10 × 108,274.60
  4. Step 4: Simplify right side
    285,836.20x = 46,389,938,373.66
  5. Step 5: Solve for x
    x = 46,389,938,373.66/285,836.20
  6. Step 6: Final answer
    x = 162,295.53

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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.