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Finding the Fourth Proportional to 271,759.80, 407,653.90 and 82,215.40

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Solution

The fourth proportional to 271,759.80, 407,653.90 and 82,215.40 is: 123,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,759.80 : 407,653.90 = 82,215.40 : x
  2. Step 2: Convert to fraction form
    271,759.80/407,653.90 = 82,215.40/x
  3. Step 3: Cross multiply
    271,759.80x = 407,653.90 × 82,215.40
  4. Step 4: Simplify right side
    271,759.80x = 33,515,428,450.06
  5. Step 5: Solve for x
    x = 33,515,428,450.06/271,759.80
  6. Step 6: Final answer
    x = 123,327.40

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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.