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Finding the Fourth Proportional to 197,998.98, 297,028.10 and 71,668.78

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Solution

The fourth proportional to 197,998.98, 297,028.10 and 71,668.78 is: 107,513.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,998.98 : 297,028.10 = 71,668.78 : x
  2. Step 2: Convert to fraction form
    197,998.98/297,028.10 = 71,668.78/x
  3. Step 3: Cross multiply
    197,998.98x = 297,028.10 × 71,668.78
  4. Step 4: Simplify right side
    197,998.98x = 21,287,641,552.72
  5. Step 5: Solve for x
    x = 21,287,641,552.72/197,998.98
  6. Step 6: Final answer
    x = 107,513.90

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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.