Home / 331,136.20-496,807.98-212,941

Finding the Fourth Proportional to 331,136.20, 496,807.98 and 212,941

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Solution

The fourth proportional to 331,136.20, 496,807.98 and 212,941 is: 319,478.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,136.20 : 496,807.98 = 212,941 : x
  2. Step 2: Convert to fraction form
    331,136.20/496,807.98 = 212,941/x
  3. Step 3: Cross multiply
    331,136.20x = 496,807.98 × 212,941
  4. Step 4: Simplify right side
    331,136.20x = 105,790,788,069.18
  5. Step 5: Solve for x
    x = 105,790,788,069.18/331,136.20
  6. Step 6: Final answer
    x = 319,478.17

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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.