Home / 221,333.10-305,467.11-135,274.38

Finding the Fourth Proportional to 221,333.10, 305,467.11 and 135,274.38

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Solution

The fourth proportional to 221,333.10, 305,467.11 and 135,274.38 is: 186,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,333.10 : 305,467.11 = 135,274.38 : x
  2. Step 2: Convert to fraction form
    221,333.10/305,467.11 = 135,274.38/x
  3. Step 3: Cross multiply
    221,333.10x = 305,467.11 × 135,274.38
  4. Step 4: Simplify right side
    221,333.10x = 41,321,873,915.64
  5. Step 5: Solve for x
    x = 41,321,873,915.64/221,333.10
  6. Step 6: Final answer
    x = 186,695.41

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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.