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Finding the Fourth Proportional to 222,107.80, 306,516.01 and 121,505.80

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Solution

The fourth proportional to 222,107.80, 306,516.01 and 121,505.80 is: 167,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,107.80 : 306,516.01 = 121,505.80 : x
  2. Step 2: Convert to fraction form
    222,107.80/306,516.01 = 121,505.80/x
  3. Step 3: Cross multiply
    222,107.80x = 306,516.01 × 121,505.80
  4. Step 4: Simplify right side
    222,107.80x = 37,243,473,007.86
  5. Step 5: Solve for x
    x = 37,243,473,007.86/222,107.80
  6. Step 6: Final answer
    x = 167,681.97

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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.