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Finding the Fourth Proportional to 226,470.80, 339,840.60 and 86,243.60

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Solution

The fourth proportional to 226,470.80, 339,840.60 and 86,243.60 is: 129,416.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,470.80 : 339,840.60 = 86,243.60 : x
  2. Step 2: Convert to fraction form
    226,470.80/339,840.60 = 86,243.60/x
  3. Step 3: Cross multiply
    226,470.80x = 339,840.60 × 86,243.60
  4. Step 4: Simplify right side
    226,470.80x = 29,309,076,770.16
  5. Step 5: Solve for x
    x = 29,309,076,770.16/226,470.80
  6. Step 6: Final answer
    x = 129,416.58

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1.5x scale

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.