Finding the Fourth Proportional to 260,166.91, 390,072.79 and 138,605.62
Calculator
Solution
The fourth proportional to 260,166.91, 390,072.79 and 138,605.62 is: 207,813.83
Step by Step Solution
- Step 1: Write the proportion equation
260,166.91 : 390,072.79 = 138,605.62 : x - Step 2: Convert to fraction form
260,166.91/390,072.79 = 138,605.62/x - Step 3: Cross multiply
260,166.91x = 390,072.79 × 138,605.62 - Step 4: Simplify right side
260,166.91x = 54,066,280,903.08 - Step 5: Solve for x
x = 54,066,280,903.08/260,166.91 - Step 6: Final answer
x = 207,813.83
Related Problems
Find fourth proportional to 130,083.46, 195,036.40 and 69,302.81
Half scale
Find fourth proportional to 520,333.82, 780,145.58 and 277,211.24
Double scale
Find fourth proportional to 260,167.91, 390,074.29 and 138,606.62
Similar ratio
Find fourth proportional to 390,250.37, 585,109.19 and 207,908.43
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.