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Finding the Fourth Proportional to 222,265.72, 306,735.42 and 121,663.72

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Solution

The fourth proportional to 222,265.72, 306,735.42 and 121,663.72 is: 167,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,265.72 : 306,735.42 = 121,663.72 : x
  2. Step 2: Convert to fraction form
    222,265.72/306,735.42 = 121,663.72/x
  3. Step 3: Cross multiply
    222,265.72x = 306,735.42 × 121,663.72
  4. Step 4: Simplify right side
    222,265.72x = 37,318,572,252.96
  5. Step 5: Solve for x
    x = 37,318,572,252.96/222,265.72
  6. Step 6: Final answer
    x = 167,900.71

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1.5x scale

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.