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Finding the Fourth Proportional to 348,855.60, 523,321.80 and 127,287.60

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Solution

The fourth proportional to 348,855.60, 523,321.80 and 127,287.60 is: 190,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,855.60 : 523,321.80 = 127,287.60 : x
  2. Step 2: Convert to fraction form
    348,855.60/523,321.80 = 127,287.60/x
  3. Step 3: Cross multiply
    348,855.60x = 523,321.80 × 127,287.60
  4. Step 4: Simplify right side
    348,855.60x = 66,612,375,949.68
  5. Step 5: Solve for x
    x = 66,612,375,949.68/348,855.60
  6. Step 6: Final answer
    x = 190,945.41

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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.