Finding the Fourth Proportional to 235,449.88, 324,911.87 and 128,019.99
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Solution
The fourth proportional to 235,449.88, 324,911.87 and 128,019.99 is: 176,662.72
Step by Step Solution
- Step 1: Write the proportion equation
235,449.88 : 324,911.87 = 128,019.99 : x - Step 2: Convert to fraction form
235,449.88/324,911.87 = 128,019.99/x - Step 3: Cross multiply
235,449.88x = 324,911.87 × 128,019.99 - Step 4: Simplify right side
235,449.88x = 41,595,215,406.68 - Step 5: Solve for x
x = 41,595,215,406.68/235,449.88 - Step 6: Final answer
x = 176,662.72
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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.