Home / 138,941-215,276

Finding the Third Proportional to 138,941 and 215,276

Calculator

Solution

The third proportional to 138,941 and 215,276 is: 333,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,941 : 215,276 = 215,276 : x
  2. Step 2: Convert to fraction form
    138,941/215,276 = 215,276/x
  3. Step 3: Cross multiply
    138,941x = 215,276 × 215,276
  4. Step 4: Simplify right side
    138,941x = 46,343,756,176
  5. Step 5: Solve for x
    x = 46,343,756,176/138,941
  6. Step 6: Final answer
    x = 333,549.90

Related Problems

Find third proportional to 69,470.50 and 107,638
Half scale
Find third proportional to 277,882 and 430,552
Double scale
Find third proportional to 138,943 and 215,279
Similar ratio
Find third proportional to 208,411.50 and 322,914
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.