Home / 205,706-318,387

Finding the Third Proportional to 205,706 and 318,387

Calculator

Solution

The third proportional to 205,706 and 318,387 is: 492,792.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,706 : 318,387 = 318,387 : x
  2. Step 2: Convert to fraction form
    205,706/318,387 = 318,387/x
  3. Step 3: Cross multiply
    205,706x = 318,387 × 318,387
  4. Step 4: Simplify right side
    205,706x = 101,370,281,769
  5. Step 5: Solve for x
    x = 101,370,281,769/205,706
  6. Step 6: Final answer
    x = 492,792.05

Related Problems

Find third proportional to 102,853 and 159,193.50
Half scale
Find third proportional to 411,412 and 636,774
Double scale
Find third proportional to 205,708 and 318,390
Similar ratio
Find third proportional to 308,559 and 477,580.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.