Finding the Fourth Proportional to 203,868.70, 305,803.05 and 161,878.30
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Solution
The fourth proportional to 203,868.70, 305,803.05 and 161,878.30 is: 242,817.45
Step by Step Solution
- Step 1: Write the proportion equation
203,868.70 : 305,803.05 = 161,878.30 : x - Step 2: Convert to fraction form
203,868.70/305,803.05 = 161,878.30/x - Step 3: Cross multiply
203,868.70x = 305,803.05 × 161,878.30 - Step 4: Simplify right side
203,868.70x = 49,502,877,868.82 - Step 5: Solve for x
x = 49,502,877,868.82/203,868.70 - Step 6: Final answer
x = 242,817.45
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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.