Home / 156,128-340,542

Finding the Third Proportional to 156,128 and 340,542

Calculator

Solution

The third proportional to 156,128 and 340,542 is: 742,780.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,128 : 340,542 = 340,542 : x
  2. Step 2: Convert to fraction form
    156,128/340,542 = 340,542/x
  3. Step 3: Cross multiply
    156,128x = 340,542 × 340,542
  4. Step 4: Simplify right side
    156,128x = 115,968,853,764
  5. Step 5: Solve for x
    x = 115,968,853,764/156,128
  6. Step 6: Final answer
    x = 742,780.63

Related Problems

Find third proportional to 78,064 and 170,271
Half scale
Find third proportional to 312,256 and 681,084
Double scale
Find third proportional to 156,130 and 340,546
Similar ratio
Find third proportional to 234,192 and 510,813
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.