Home / 543,623.20-815,629.20-228,176.80

Finding the Fourth Proportional to 543,623.20, 815,629.20 and 228,176.80

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Solution

The fourth proportional to 543,623.20, 815,629.20 and 228,176.80 is: 342,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,623.20 : 815,629.20 = 228,176.80 : x
  2. Step 2: Convert to fraction form
    543,623.20/815,629.20 = 228,176.80/x
  3. Step 3: Cross multiply
    543,623.20x = 815,629.20 × 228,176.80
  4. Step 4: Simplify right side
    543,623.20x = 186,107,660,842.56
  5. Step 5: Solve for x
    x = 186,107,660,842.56/543,623.20
  6. Step 6: Final answer
    x = 342,346.80

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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.