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Finding the Fourth Proportional to 247,071.36, 340,949.34 and 133,891.68

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Solution

The fourth proportional to 247,071.36, 340,949.34 and 133,891.68 is: 184,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,071.36 : 340,949.34 = 133,891.68 : x
  2. Step 2: Convert to fraction form
    247,071.36/340,949.34 = 133,891.68/x
  3. Step 3: Cross multiply
    247,071.36x = 340,949.34 × 133,891.68
  4. Step 4: Simplify right side
    247,071.36x = 45,650,279,927.49
  5. Step 5: Solve for x
    x = 45,650,279,927.49/247,071.36
  6. Step 6: Final answer
    x = 184,765.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.