Home / 90,778-208,368

Finding the Third Proportional to 90,778 and 208,368

Calculator

Solution

The third proportional to 90,778 and 208,368 is: 478,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,778 : 208,368 = 208,368 : x
  2. Step 2: Convert to fraction form
    90,778/208,368 = 208,368/x
  3. Step 3: Cross multiply
    90,778x = 208,368 × 208,368
  4. Step 4: Simplify right side
    90,778x = 43,417,223,424
  5. Step 5: Solve for x
    x = 43,417,223,424/90,778
  6. Step 6: Final answer
    x = 478,279.14

Related Problems

Find third proportional to 45,389 and 104,184
Half scale
Find third proportional to 181,556 and 416,736
Double scale
Find third proportional to 90,780 and 208,373
Similar ratio
Find third proportional to 136,167 and 312,552
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.