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Finding the Fourth Proportional to 223,694.46, 308,703.49 and 126,904.79

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Solution

The fourth proportional to 223,694.46, 308,703.49 and 126,904.79 is: 175,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,694.46 : 308,703.49 = 126,904.79 : x
  2. Step 2: Convert to fraction form
    223,694.46/308,703.49 = 126,904.79/x
  3. Step 3: Cross multiply
    223,694.46x = 308,703.49 × 126,904.79
  4. Step 4: Simplify right side
    223,694.46x = 39,175,952,025.21
  5. Step 5: Solve for x
    x = 39,175,952,025.21/223,694.46
  6. Step 6: Final answer
    x = 175,131.53

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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.