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Finding the Fourth Proportional to 222,555, 307,126.02 and 121,953

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Solution

The fourth proportional to 222,555, 307,126.02 and 121,953 is: 168,295.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,555 : 307,126.02 = 121,953 : x
  2. Step 2: Convert to fraction form
    222,555/307,126.02 = 121,953/x
  3. Step 3: Cross multiply
    222,555x = 307,126.02 × 121,953
  4. Step 4: Simplify right side
    222,555x = 37,454,939,517.06
  5. Step 5: Solve for x
    x = 37,454,939,517.06/222,555
  6. Step 6: Final answer
    x = 168,295.21

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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.