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Finding the Fourth Proportional to 321,136.60, 481,244.10 and 236,234.20

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Solution

The fourth proportional to 321,136.60, 481,244.10 and 236,234.20 is: 354,012.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,136.60 : 481,244.10 = 236,234.20 : x
  2. Step 2: Convert to fraction form
    321,136.60/481,244.10 = 236,234.20/x
  3. Step 3: Cross multiply
    321,136.60x = 481,244.10 × 236,234.20
  4. Step 4: Simplify right side
    321,136.60x = 113,686,314,968.22
  5. Step 5: Solve for x
    x = 113,686,314,968.22/321,136.60
  6. Step 6: Final answer
    x = 354,012.33

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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.