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Finding the Fourth Proportional to 226,243.20, 339,364.80 and 115,420.80

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Solution

The fourth proportional to 226,243.20, 339,364.80 and 115,420.80 is: 173,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,243.20 : 339,364.80 = 115,420.80 : x
  2. Step 2: Convert to fraction form
    226,243.20/339,364.80 = 115,420.80/x
  3. Step 3: Cross multiply
    226,243.20x = 339,364.80 × 115,420.80
  4. Step 4: Simplify right side
    226,243.20x = 39,169,756,707.84
  5. Step 5: Solve for x
    x = 39,169,756,707.84/226,243.20
  6. Step 6: Final answer
    x = 173,131.20

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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.