Home / 216,540-318,246

Finding the Third Proportional to 216,540 and 318,246

Calculator

Solution

The third proportional to 216,540 and 318,246 is: 467,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,540 : 318,246 = 318,246 : x
  2. Step 2: Convert to fraction form
    216,540/318,246 = 318,246/x
  3. Step 3: Cross multiply
    216,540x = 318,246 × 318,246
  4. Step 4: Simplify right side
    216,540x = 101,280,516,516
  5. Step 5: Solve for x
    x = 101,280,516,516/216,540
  6. Step 6: Final answer
    x = 467,721.98

Related Problems

Find third proportional to 108,270 and 159,123
Half scale
Find third proportional to 433,080 and 636,492
Double scale
Find third proportional to 216,542 and 318,249
Similar ratio
Find third proportional to 324,810 and 477,369
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.