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Finding the Fourth Proportional to 220,995.60, 331,872.48 and 211,022.88

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Solution

The fourth proportional to 220,995.60, 331,872.48 and 211,022.88 is: 316,896.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,995.60 : 331,872.48 = 211,022.88 : x
  2. Step 2: Convert to fraction form
    220,995.60/331,872.48 = 211,022.88/x
  3. Step 3: Cross multiply
    220,995.60x = 331,872.48 × 211,022.88
  4. Step 4: Simplify right side
    220,995.60x = 70,032,686,522.34
  5. Step 5: Solve for x
    x = 70,032,686,522.34/220,995.60
  6. Step 6: Final answer
    x = 316,896.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.