Finding the Fourth Proportional to 219,027.78, 302,519.97 and 155,640.42
Calculator
Solution
The fourth proportional to 219,027.78, 302,519.97 and 155,640.42 is: 214,969.70
Step by Step Solution
- Step 1: Write the proportion equation
219,027.78 : 302,519.97 = 155,640.42 : x - Step 2: Convert to fraction form
219,027.78/302,519.97 = 155,640.42/x - Step 3: Cross multiply
219,027.78x = 302,519.97 × 155,640.42 - Step 4: Simplify right side
219,027.78x = 47,084,335,189.19 - Step 5: Solve for x
x = 47,084,335,189.19/219,027.78 - Step 6: Final answer
x = 214,969.70
Related Problems
Find fourth proportional to 109,513.89, 151,259.99 and 77,820.21
Half scale
Find fourth proportional to 438,055.56, 605,039.94 and 311,280.84
Double scale
Find fourth proportional to 219,028.78, 302,521.35 and 155,641.42
Similar ratio
Find fourth proportional to 328,541.67, 453,779.96 and 233,460.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.