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Finding the Fourth Proportional to 276,908.39, 415,362.53 and 66,546.32

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Solution

The fourth proportional to 276,908.39, 415,362.53 and 66,546.32 is: 99,819.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,908.39 : 415,362.53 = 66,546.32 : x
  2. Step 2: Convert to fraction form
    276,908.39/415,362.53 = 66,546.32/x
  3. Step 3: Cross multiply
    276,908.39x = 415,362.53 × 66,546.32
  4. Step 4: Simplify right side
    276,908.39x = 27,640,845,427.85
  5. Step 5: Solve for x
    x = 27,640,845,427.85/276,908.39
  6. Step 6: Final answer
    x = 99,819.46

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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.