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Finding the Fourth Proportional to 222,978.97, 307,711.18 and 121,004.43

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Solution

The fourth proportional to 222,978.97, 307,711.18 and 121,004.43 is: 166,986.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,978.97 : 307,711.18 = 121,004.43 : x
  2. Step 2: Convert to fraction form
    222,978.97/307,711.18 = 121,004.43/x
  3. Step 3: Cross multiply
    222,978.97x = 307,711.18 × 121,004.43
  4. Step 4: Simplify right side
    222,978.97x = 37,234,415,754.71
  5. Step 5: Solve for x
    x = 37,234,415,754.71/222,978.97
  6. Step 6: Final answer
    x = 166,986.22

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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.