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Finding the Fourth Proportional to 221,496.56, 305,668.44 and 120,892.40

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Solution

The fourth proportional to 221,496.56, 305,668.44 and 120,892.40 is: 166,833.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,496.56 : 305,668.44 = 120,892.40 : x
  2. Step 2: Convert to fraction form
    221,496.56/305,668.44 = 120,892.40/x
  3. Step 3: Cross multiply
    221,496.56x = 305,668.44 × 120,892.40
  4. Step 4: Simplify right side
    221,496.56x = 36,952,991,315.86
  5. Step 5: Solve for x
    x = 36,952,991,315.86/221,496.56
  6. Step 6: Final answer
    x = 166,833.25

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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.