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Finding the Fourth Proportional to 223,351.78, 308,228.46 and 121,379.26

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Solution

The fourth proportional to 223,351.78, 308,228.46 and 121,379.26 is: 167,505.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,351.78 : 308,228.46 = 121,379.26 : x
  2. Step 2: Convert to fraction form
    223,351.78/308,228.46 = 121,379.26/x
  3. Step 3: Cross multiply
    223,351.78x = 308,228.46 × 121,379.26
  4. Step 4: Simplify right side
    223,351.78x = 37,412,542,385.74
  5. Step 5: Solve for x
    x = 37,412,542,385.74/223,351.78
  6. Step 6: Final answer
    x = 167,505.01

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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.