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Finding the Fourth Proportional to 222,042.20, 306,410.65 and 126,579.65

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Solution

The fourth proportional to 222,042.20, 306,410.65 and 126,579.65 is: 174,675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,042.20 : 306,410.65 = 126,579.65 : x
  2. Step 2: Convert to fraction form
    222,042.20/306,410.65 = 126,579.65/x
  3. Step 3: Cross multiply
    222,042.20x = 306,410.65 × 126,579.65
  4. Step 4: Simplify right side
    222,042.20x = 38,785,350,984.77
  5. Step 5: Solve for x
    x = 38,785,350,984.77/222,042.20
  6. Step 6: Final answer
    x = 174,675.59

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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.