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Finding the Fourth Proportional to 329,424.30, 494,136.45 and 217,231.20

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Solution

The fourth proportional to 329,424.30, 494,136.45 and 217,231.20 is: 325,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,424.30 : 494,136.45 = 217,231.20 : x
  2. Step 2: Convert to fraction form
    329,424.30/494,136.45 = 217,231.20/x
  3. Step 3: Cross multiply
    329,424.30x = 494,136.45 × 217,231.20
  4. Step 4: Simplify right side
    329,424.30x = 107,341,853,997.24
  5. Step 5: Solve for x
    x = 107,341,853,997.24/329,424.30
  6. Step 6: Final answer
    x = 325,846.80

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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.