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Finding the Fourth Proportional to 223,720.70, 308,665.04 and 126,908.60

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Solution

The fourth proportional to 223,720.70, 308,665.04 and 126,908.60 is: 175,094.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,720.70 : 308,665.04 = 126,908.60 : x
  2. Step 2: Convert to fraction form
    223,720.70/308,665.04 = 126,908.60/x
  3. Step 3: Cross multiply
    223,720.70x = 308,665.04 × 126,908.60
  4. Step 4: Simplify right side
    223,720.70x = 39,172,245,917.48
  5. Step 5: Solve for x
    x = 39,172,245,917.48/223,720.70
  6. Step 6: Final answer
    x = 175,094.42

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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.