Home / 199,815-310,560

Finding the Third Proportional to 199,815 and 310,560

Calculator

Solution

The third proportional to 199,815 and 310,560 is: 482,684.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,815 : 310,560 = 310,560 : x
  2. Step 2: Convert to fraction form
    199,815/310,560 = 310,560/x
  3. Step 3: Cross multiply
    199,815x = 310,560 × 310,560
  4. Step 4: Simplify right side
    199,815x = 96,447,513,600
  5. Step 5: Solve for x
    x = 96,447,513,600/199,815
  6. Step 6: Final answer
    x = 482,684.05

Related Problems

Find third proportional to 99,907.50 and 155,280
Half scale
Find third proportional to 399,630 and 621,120
Double scale
Find third proportional to 199,817 and 310,563
Similar ratio
Find third proportional to 299,722.50 and 465,840
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.