Home / 128,748-269,262

Finding the Third Proportional to 128,748 and 269,262

Calculator

Solution

The third proportional to 128,748 and 269,262 is: 563,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,748 : 269,262 = 269,262 : x
  2. Step 2: Convert to fraction form
    128,748/269,262 = 269,262/x
  3. Step 3: Cross multiply
    128,748x = 269,262 × 269,262
  4. Step 4: Simplify right side
    128,748x = 72,502,024,644
  5. Step 5: Solve for x
    x = 72,502,024,644/128,748
  6. Step 6: Final answer
    x = 563,131.27

Related Problems

Find third proportional to 64,374 and 134,631
Half scale
Find third proportional to 257,496 and 538,524
Double scale
Find third proportional to 128,750 and 269,266
Similar ratio
Find third proportional to 193,122 and 403,893
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.