Home / 128,552-276,840

Finding the Third Proportional to 128,552 and 276,840

Calculator

Solution

The third proportional to 128,552 and 276,840 is: 596,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,552 : 276,840 = 276,840 : x
  2. Step 2: Convert to fraction form
    128,552/276,840 = 276,840/x
  3. Step 3: Cross multiply
    128,552x = 276,840 × 276,840
  4. Step 4: Simplify right side
    128,552x = 76,640,385,600
  5. Step 5: Solve for x
    x = 76,640,385,600/128,552
  6. Step 6: Final answer
    x = 596,181.98

Related Problems

Find third proportional to 64,276 and 138,420
Half scale
Find third proportional to 257,104 and 553,680
Double scale
Find third proportional to 128,554 and 276,844
Similar ratio
Find third proportional to 192,828 and 415,260
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.