Finding the Fourth Proportional to 215,933.94, 323,908.20 and 121,159.08
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Solution
The fourth proportional to 215,933.94, 323,908.20 and 121,159.08 is: 181,742.71
Step by Step Solution
- Step 1: Write the proportion equation
215,933.94 : 323,908.20 = 121,159.08 : x - Step 2: Convert to fraction form
215,933.94/323,908.20 = 121,159.08/x - Step 3: Cross multiply
215,933.94x = 323,908.20 × 121,159.08 - Step 4: Simplify right side
215,933.94x = 39,244,419,516.46 - Step 5: Solve for x
x = 39,244,419,516.46/215,933.94 - Step 6: Final answer
x = 181,742.71
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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.