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Finding the Fourth Proportional to 213,136.44, 319,704.12 and 200,145.12

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Solution

The fourth proportional to 213,136.44, 319,704.12 and 200,145.12 is: 300,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,136.44 : 319,704.12 = 200,145.12 : x
  2. Step 2: Convert to fraction form
    213,136.44/319,704.12 = 200,145.12/x
  3. Step 3: Cross multiply
    213,136.44x = 319,704.12 × 200,145.12
  4. Step 4: Simplify right side
    213,136.44x = 63,987,219,461.89
  5. Step 5: Solve for x
    x = 63,987,219,461.89/213,136.44
  6. Step 6: Final answer
    x = 300,217.17

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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.