Finding the Fourth Proportional to 210,269.14, 315,292.88 and 91,802.09
Calculator
Solution
The fourth proportional to 210,269.14, 315,292.88 and 91,802.09 is: 137,654.75
Step by Step Solution
- Step 1: Write the proportion equation
210,269.14 : 315,292.88 = 91,802.09 : x - Step 2: Convert to fraction form
210,269.14/315,292.88 = 91,802.09/x - Step 3: Cross multiply
210,269.14x = 315,292.88 × 91,802.09 - Step 4: Simplify right side
210,269.14x = 28,944,545,346.12 - Step 5: Solve for x
x = 28,944,545,346.12/210,269.14 - Step 6: Final answer
x = 137,654.75
Related Problems
Find fourth proportional to 105,134.57, 157,646.44 and 45,901.05
Half scale
Find fourth proportional to 420,538.28, 630,585.76 and 183,604.18
Double scale
Find fourth proportional to 210,270.14, 315,294.38 and 91,803.09
Similar ratio
Find fourth proportional to 315,403.71, 472,939.32 and 137,703.14
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.