Finding the Fourth Proportional to 401,739.78, 554,400.55 and 220,463.09
Calculator
Solution
The fourth proportional to 401,739.78, 554,400.55 and 220,463.09 is: 304,238.88
Step by Step Solution
- Step 1: Write the proportion equation
401,739.78 : 554,400.55 = 220,463.09 : x - Step 2: Convert to fraction form
401,739.78/554,400.55 = 220,463.09/x - Step 3: Cross multiply
401,739.78x = 554,400.55 × 220,463.09 - Step 4: Simplify right side
401,739.78x = 122,224,859,492.53 - Step 5: Solve for x
x = 122,224,859,492.53/401,739.78 - Step 6: Final answer
x = 304,238.88
Related Problems
Find fourth proportional to 200,869.89, 277,200.28 and 110,231.55
Half scale
Find fourth proportional to 803,479.55, 1,108,801.10 and 440,926.18
Double scale
Find fourth proportional to 401,740.78, 554,401.93 and 220,464.09
Similar ratio
Find fourth proportional to 602,609.66, 831,600.83 and 330,694.64
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.