Home / 256,820-553,166

Finding the Third Proportional to 256,820 and 553,166

Calculator

Solution

The third proportional to 256,820 and 553,166 is: 1,191,467.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,820 : 553,166 = 553,166 : x
  2. Step 2: Convert to fraction form
    256,820/553,166 = 553,166/x
  3. Step 3: Cross multiply
    256,820x = 553,166 × 553,166
  4. Step 4: Simplify right side
    256,820x = 305,992,623,556
  5. Step 5: Solve for x
    x = 305,992,623,556/256,820
  6. Step 6: Final answer
    x = 1,191,467.27

Related Problems

Find third proportional to 128,410 and 276,583
Half scale
Find third proportional to 513,640 and 1,106,332
Double scale
Find third proportional to 256,822 and 553,170
Similar ratio
Find third proportional to 385,230 and 829,749
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.