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Finding the Fourth Proportional to 223,320.70, 308,179.07 and 122,716.54

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Solution

The fourth proportional to 223,320.70, 308,179.07 and 122,716.54 is: 169,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,320.70 : 308,179.07 = 122,716.54 : x
  2. Step 2: Convert to fraction form
    223,320.70/308,179.07 = 122,716.54/x
  3. Step 3: Cross multiply
    223,320.70x = 308,179.07 × 122,716.54
  4. Step 4: Simplify right side
    223,320.70x = 37,818,669,170.82
  5. Step 5: Solve for x
    x = 37,818,669,170.82/223,320.70
  6. Step 6: Final answer
    x = 169,346.90

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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.