Home / 285,835.20-428,445.60-108,273.60

Finding the Fourth Proportional to 285,835.20, 428,445.60 and 108,273.60

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Solution

The fourth proportional to 285,835.20, 428,445.60 and 108,273.60 is: 162,294.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,835.20 : 428,445.60 = 108,273.60 : x
  2. Step 2: Convert to fraction form
    285,835.20/428,445.60 = 108,273.60/x
  3. Step 3: Cross multiply
    285,835.20x = 428,445.60 × 108,273.60
  4. Step 4: Simplify right side
    285,835.20x = 46,389,347,516.16
  5. Step 5: Solve for x
    x = 46,389,347,516.16/285,835.20
  6. Step 6: Final answer
    x = 162,294.03

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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.