Home / 212,340-309,744

Finding the Third Proportional to 212,340 and 309,744

Calculator

Solution

The third proportional to 212,340 and 309,744 is: 451,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,340 : 309,744 = 309,744 : x
  2. Step 2: Convert to fraction form
    212,340/309,744 = 309,744/x
  3. Step 3: Cross multiply
    212,340x = 309,744 × 309,744
  4. Step 4: Simplify right side
    212,340x = 95,941,345,536
  5. Step 5: Solve for x
    x = 95,941,345,536/212,340
  6. Step 6: Final answer
    x = 451,828.89

Related Problems

Find third proportional to 106,170 and 154,872
Half scale
Find third proportional to 424,680 and 619,488
Double scale
Find third proportional to 212,342 and 309,747
Similar ratio
Find third proportional to 318,510 and 464,616
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.