Finding the Fourth Proportional to 275,665.36, 380,392.06 and 154,782.99
Calculator
Solution
The fourth proportional to 275,665.36, 380,392.06 and 154,782.99 is: 213,585.85
Step by Step Solution
- Step 1: Write the proportion equation
275,665.36 : 380,392.06 = 154,782.99 : x - Step 2: Convert to fraction form
275,665.36/380,392.06 = 154,782.99/x - Step 3: Cross multiply
275,665.36x = 380,392.06 × 154,782.99 - Step 4: Simplify right side
275,665.36x = 58,878,220,419.06 - Step 5: Solve for x
x = 58,878,220,419.06/275,665.36 - Step 6: Final answer
x = 213,585.85
Related Problems
Find fourth proportional to 137,832.68, 190,196.03 and 77,391.50
Half scale
Find fourth proportional to 551,330.72, 760,784.12 and 309,565.98
Double scale
Find fourth proportional to 275,666.36, 380,393.44 and 154,783.99
Similar ratio
Find fourth proportional to 413,498.04, 570,588.09 and 232,174.49
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.