Finding the Fourth Proportional to 221,557.68, 305,748.03 and 120,955.68
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Solution
The fourth proportional to 221,557.68, 305,748.03 and 120,955.68 is: 166,917.98
Step by Step Solution
- Step 1: Write the proportion equation
221,557.68 : 305,748.03 = 120,955.68 : x - Step 2: Convert to fraction form
221,557.68/305,748.03 = 120,955.68/x - Step 3: Cross multiply
221,557.68x = 305,748.03 × 120,955.68 - Step 4: Simplify right side
221,557.68x = 36,981,960,877.31 - Step 5: Solve for x
x = 36,981,960,877.31/221,557.68 - Step 6: Final answer
x = 166,917.98
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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.