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Finding the Fourth Proportional to 222,223.50, 306,668.43 and 121,621.50

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Solution

The fourth proportional to 222,223.50, 306,668.43 and 121,621.50 is: 167,837.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,223.50 : 306,668.43 = 121,621.50 : x
  2. Step 2: Convert to fraction form
    222,223.50/306,668.43 = 121,621.50/x
  3. Step 3: Cross multiply
    222,223.50x = 306,668.43 × 121,621.50
  4. Step 4: Simplify right side
    222,223.50x = 37,297,474,459.25
  5. Step 5: Solve for x
    x = 37,297,474,459.25/222,223.50
  6. Step 6: Final answer
    x = 167,837.67

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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.