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Finding the Fourth Proportional to 222,553.48, 307,113.78 and 121,949.32

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Solution

The fourth proportional to 222,553.48, 307,113.78 and 121,949.32 is: 168,284.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,553.48 : 307,113.78 = 121,949.32 : x
  2. Step 2: Convert to fraction form
    222,553.48/307,113.78 = 121,949.32/x
  3. Step 3: Cross multiply
    222,553.48x = 307,113.78 × 121,949.32
  4. Step 4: Simplify right side
    222,553.48x = 37,452,316,633.63
  5. Step 5: Solve for x
    x = 37,452,316,633.63/222,553.48
  6. Step 6: Final answer
    x = 168,284.57

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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.