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Finding the Fourth Proportional to 223,573.07, 308,439.79 and 126,756.54

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Solution

The fourth proportional to 223,573.07, 308,439.79 and 126,756.54 is: 174,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,573.07 : 308,439.79 = 126,756.54 : x
  2. Step 2: Convert to fraction form
    223,573.07/308,439.79 = 126,756.54/x
  3. Step 3: Cross multiply
    223,573.07x = 308,439.79 × 126,756.54
  4. Step 4: Simplify right side
    223,573.07x = 39,096,760,578.73
  5. Step 5: Solve for x
    x = 39,096,760,578.73/223,573.07
  6. Step 6: Final answer
    x = 174,872.41

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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.