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Finding the Fourth Proportional to 221,907.52, 306,231.96 and 121,305.52

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Solution

The fourth proportional to 221,907.52, 306,231.96 and 121,305.52 is: 167,401.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,907.52 : 306,231.96 = 121,305.52 : x
  2. Step 2: Convert to fraction form
    221,907.52/306,231.96 = 121,305.52/x
  3. Step 3: Cross multiply
    221,907.52x = 306,231.96 × 121,305.52
  4. Step 4: Simplify right side
    221,907.52x = 37,147,627,148.42
  5. Step 5: Solve for x
    x = 37,147,627,148.42/221,907.52
  6. Step 6: Final answer
    x = 167,401.39

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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.