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Finding the Fourth Proportional to 208,992.39, 313,500.42 and 66,850.14

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Solution

The fourth proportional to 208,992.39, 313,500.42 and 66,850.14 is: 100,279.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,992.39 : 313,500.42 = 66,850.14 : x
  2. Step 2: Convert to fraction form
    208,992.39/313,500.42 = 66,850.14/x
  3. Step 3: Cross multiply
    208,992.39x = 313,500.42 × 66,850.14
  4. Step 4: Simplify right side
    208,992.39x = 20,957,546,967.06
  5. Step 5: Solve for x
    x = 20,957,546,967.06/208,992.39
  6. Step 6: Final answer
    x = 100,279.00

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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.