Home / 399,211.80-597,942.90-212,004.60

Finding the Fourth Proportional to 399,211.80, 597,942.90 and 212,004.60

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Solution

The fourth proportional to 399,211.80, 597,942.90 and 212,004.60 is: 317,542.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,211.80 : 597,942.90 = 212,004.60 : x
  2. Step 2: Convert to fraction form
    399,211.80/597,942.90 = 212,004.60/x
  3. Step 3: Cross multiply
    399,211.80x = 597,942.90 × 212,004.60
  4. Step 4: Simplify right side
    399,211.80x = 126,766,645,337.34
  5. Step 5: Solve for x
    x = 126,766,645,337.34/399,211.80
  6. Step 6: Final answer
    x = 317,542.33

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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.