Home / 242,128-400,152

Finding the Third Proportional to 242,128 and 400,152

Calculator

Solution

The third proportional to 242,128 and 400,152 is: 661,309.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,128 : 400,152 = 400,152 : x
  2. Step 2: Convert to fraction form
    242,128/400,152 = 400,152/x
  3. Step 3: Cross multiply
    242,128x = 400,152 × 400,152
  4. Step 4: Simplify right side
    242,128x = 160,121,623,104
  5. Step 5: Solve for x
    x = 160,121,623,104/242,128
  6. Step 6: Final answer
    x = 661,309.82

Related Problems

Find third proportional to 121,064 and 200,076
Half scale
Find third proportional to 484,256 and 800,304
Double scale
Find third proportional to 242,130 and 400,155
Similar ratio
Find third proportional to 363,192 and 600,228
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.