Home / 198,538-428,178

Finding the Third Proportional to 198,538 and 428,178

Calculator

Solution

The third proportional to 198,538 and 428,178 is: 923,432.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,538 : 428,178 = 428,178 : x
  2. Step 2: Convert to fraction form
    198,538/428,178 = 428,178/x
  3. Step 3: Cross multiply
    198,538x = 428,178 × 428,178
  4. Step 4: Simplify right side
    198,538x = 183,336,399,684
  5. Step 5: Solve for x
    x = 183,336,399,684/198,538
  6. Step 6: Final answer
    x = 923,432.29

Related Problems

Find third proportional to 99,269 and 214,089
Half scale
Find third proportional to 397,076 and 856,356
Double scale
Find third proportional to 198,540 and 428,182
Similar ratio
Find third proportional to 297,807 and 642,267
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.