Home / 178,440-276,460

Finding the Third Proportional to 178,440 and 276,460

Calculator

Solution

The third proportional to 178,440 and 276,460 is: 428,323.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,440 : 276,460 = 276,460 : x
  2. Step 2: Convert to fraction form
    178,440/276,460 = 276,460/x
  3. Step 3: Cross multiply
    178,440x = 276,460 × 276,460
  4. Step 4: Simplify right side
    178,440x = 76,430,131,600
  5. Step 5: Solve for x
    x = 76,430,131,600/178,440
  6. Step 6: Final answer
    x = 428,323.98

Related Problems

Find third proportional to 89,220 and 138,230
Half scale
Find third proportional to 356,880 and 552,920
Double scale
Find third proportional to 178,442 and 276,463
Similar ratio
Find third proportional to 267,660 and 414,690
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.