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Finding the Fourth Proportional to 222,470.51, 307,031.31 and 126,991.55

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Solution

The fourth proportional to 222,470.51, 307,031.31 and 126,991.55 is: 175,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,470.51 : 307,031.31 = 126,991.55 : x
  2. Step 2: Convert to fraction form
    222,470.51/307,031.31 = 126,991.55/x
  3. Step 3: Cross multiply
    222,470.51x = 307,031.31 × 126,991.55
  4. Step 4: Simplify right side
    222,470.51x = 38,990,382,723.01
  5. Step 5: Solve for x
    x = 38,990,382,723.01/222,470.51
  6. Step 6: Final answer
    x = 175,260.91

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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.