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Finding the Fourth Proportional to 339,289.80, 508,610.70 and 126,000.60

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Solution

The fourth proportional to 339,289.80, 508,610.70 and 126,000.60 is: 188,880.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,289.80 : 508,610.70 = 126,000.60 : x
  2. Step 2: Convert to fraction form
    339,289.80/508,610.70 = 126,000.60/x
  3. Step 3: Cross multiply
    339,289.80x = 508,610.70 × 126,000.60
  4. Step 4: Simplify right side
    339,289.80x = 64,085,253,366.42
  5. Step 5: Solve for x
    x = 64,085,253,366.42/339,289.80
  6. Step 6: Final answer
    x = 188,880.58

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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.