Home / 317,392-421,224

Finding the Third Proportional to 317,392 and 421,224

Calculator

Solution

The third proportional to 317,392 and 421,224 is: 559,023.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,392 : 421,224 = 421,224 : x
  2. Step 2: Convert to fraction form
    317,392/421,224 = 421,224/x
  3. Step 3: Cross multiply
    317,392x = 421,224 × 421,224
  4. Step 4: Simplify right side
    317,392x = 177,429,658,176
  5. Step 5: Solve for x
    x = 177,429,658,176/317,392
  6. Step 6: Final answer
    x = 559,023.73

Related Problems

Find third proportional to 158,696 and 210,612
Half scale
Find third proportional to 634,784 and 842,448
Double scale
Find third proportional to 317,394 and 421,227
Similar ratio
Find third proportional to 476,088 and 631,836
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.