Home / 221,996.72-306,349.26-121,392.56

Finding the Fourth Proportional to 221,996.72, 306,349.26 and 121,392.56

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Solution

The fourth proportional to 221,996.72, 306,349.26 and 121,392.56 is: 167,518.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,996.72 : 306,349.26 = 121,392.56 : x
  2. Step 2: Convert to fraction form
    221,996.72/306,349.26 = 121,392.56/x
  3. Step 3: Cross multiply
    221,996.72x = 306,349.26 × 121,392.56
  4. Step 4: Simplify right side
    221,996.72x = 37,188,521,236.16
  5. Step 5: Solve for x
    x = 37,188,521,236.16/221,996.72
  6. Step 6: Final answer
    x = 167,518.33

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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.