Home / 331,135.20-496,806.48-212,940

Finding the Fourth Proportional to 331,135.20, 496,806.48 and 212,940

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Solution

The fourth proportional to 331,135.20, 496,806.48 and 212,940 is: 319,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,135.20 : 496,806.48 = 212,940 : x
  2. Step 2: Convert to fraction form
    331,135.20/496,806.48 = 212,940/x
  3. Step 3: Cross multiply
    331,135.20x = 496,806.48 × 212,940
  4. Step 4: Simplify right side
    331,135.20x = 105,789,971,851.20
  5. Step 5: Solve for x
    x = 105,789,971,851.20/331,135.20
  6. Step 6: Final answer
    x = 319,476.67

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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.