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Finding the Fourth Proportional to 223,369.68, 308,251.80 and 121,395.54

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Solution

The fourth proportional to 223,369.68, 308,251.80 and 121,395.54 is: 167,526.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,369.68 : 308,251.80 = 121,395.54 : x
  2. Step 2: Convert to fraction form
    223,369.68/308,251.80 = 121,395.54/x
  3. Step 3: Cross multiply
    223,369.68x = 308,251.80 × 121,395.54
  4. Step 4: Simplify right side
    223,369.68x = 37,420,393,716.97
  5. Step 5: Solve for x
    x = 37,420,393,716.97/223,369.68
  6. Step 6: Final answer
    x = 167,526.74

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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.