Home / 128,358-309,230

Finding the Third Proportional to 128,358 and 309,230

Calculator

Solution

The third proportional to 128,358 and 309,230 is: 744,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,358 : 309,230 = 309,230 : x
  2. Step 2: Convert to fraction form
    128,358/309,230 = 309,230/x
  3. Step 3: Cross multiply
    128,358x = 309,230 × 309,230
  4. Step 4: Simplify right side
    128,358x = 95,623,192,900
  5. Step 5: Solve for x
    x = 95,623,192,900/128,358
  6. Step 6: Final answer
    x = 744,972.60

Related Problems

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.