Home / 543,438.20-815,546.10-228,121.40

Finding the Fourth Proportional to 543,438.20, 815,546.10 and 228,121.40

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Solution

The fourth proportional to 543,438.20, 815,546.10 and 228,121.40 is: 342,345.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,438.20 : 815,546.10 = 228,121.40 : x
  2. Step 2: Convert to fraction form
    543,438.20/815,546.10 = 228,121.40/x
  3. Step 3: Cross multiply
    543,438.20x = 815,546.10 × 228,121.40
  4. Step 4: Simplify right side
    543,438.20x = 186,043,518,096.54
  5. Step 5: Solve for x
    x = 186,043,518,096.54/543,438.20
  6. Step 6: Final answer
    x = 342,345.31

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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.