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Finding the Fourth Proportional to 225,884.80, 338,961.60 and 85,657.60

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Solution

The fourth proportional to 225,884.80, 338,961.60 and 85,657.60 is: 128,537.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,884.80 : 338,961.60 = 85,657.60 : x
  2. Step 2: Convert to fraction form
    225,884.80/338,961.60 = 85,657.60/x
  3. Step 3: Cross multiply
    225,884.80x = 338,961.60 × 85,657.60
  4. Step 4: Simplify right side
    225,884.80x = 29,034,637,148.16
  5. Step 5: Solve for x
    x = 29,034,637,148.16/225,884.80
  6. Step 6: Final answer
    x = 128,537.37

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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.