Home / 153,800-206,940

Finding the Third Proportional to 153,800 and 206,940

Calculator

Solution

The third proportional to 153,800 and 206,940 is: 278,440.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,800 : 206,940 = 206,940 : x
  2. Step 2: Convert to fraction form
    153,800/206,940 = 206,940/x
  3. Step 3: Cross multiply
    153,800x = 206,940 × 206,940
  4. Step 4: Simplify right side
    153,800x = 42,824,163,600
  5. Step 5: Solve for x
    x = 42,824,163,600/153,800
  6. Step 6: Final answer
    x = 278,440.60

Related Problems

Find third proportional to 76,900 and 103,470
Half scale
Find third proportional to 307,600 and 413,880
Double scale
Find third proportional to 153,802 and 206,943
Similar ratio
Find third proportional to 230,700 and 310,410
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.