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Finding the Fourth Proportional to 222,171, 306,595.98 and 121,569

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Solution

The fourth proportional to 222,171, 306,595.98 and 121,569 is: 167,765.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,171 : 306,595.98 = 121,569 : x
  2. Step 2: Convert to fraction form
    222,171/306,595.98 = 121,569/x
  3. Step 3: Cross multiply
    222,171x = 306,595.98 × 121,569
  4. Step 4: Simplify right side
    222,171x = 37,272,566,692.62
  5. Step 5: Solve for x
    x = 37,272,566,692.62/222,171
  6. Step 6: Final answer
    x = 167,765.22

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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.