Home / 285,455.37-428,192.78-135,618.33

Finding the Fourth Proportional to 285,455.37, 428,192.78 and 135,618.33

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Solution

The fourth proportional to 285,455.37, 428,192.78 and 135,618.33 is: 203,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,455.37 : 428,192.78 = 135,618.33 : x
  2. Step 2: Convert to fraction form
    285,455.37/428,192.78 = 135,618.33/x
  3. Step 3: Cross multiply
    285,455.37x = 428,192.78 × 135,618.33
  4. Step 4: Simplify right side
    285,455.37x = 58,070,789,063.57
  5. Step 5: Solve for x
    x = 58,070,789,063.57/285,455.37
  6. Step 6: Final answer
    x = 203,432.11

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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.