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Finding the Fourth Proportional to 226,879.40, 340,448.70 and 86,738.60

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Solution

The fourth proportional to 226,879.40, 340,448.70 and 86,738.60 is: 130,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,879.40 : 340,448.70 = 86,738.60 : x
  2. Step 2: Convert to fraction form
    226,879.40/340,448.70 = 86,738.60/x
  3. Step 3: Cross multiply
    226,879.40x = 340,448.70 × 86,738.60
  4. Step 4: Simplify right side
    226,879.40x = 29,530,043,609.82
  5. Step 5: Solve for x
    x = 29,530,043,609.82/226,879.40
  6. Step 6: Final answer
    x = 130,157.45

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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.