Finding the Fourth Proportional to 203,878.20, 305,817.30 and 161,887.80
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Solution
The fourth proportional to 203,878.20, 305,817.30 and 161,887.80 is: 242,831.70
Step by Step Solution
- Step 1: Write the proportion equation
203,878.20 : 305,817.30 = 161,887.80 : x - Step 2: Convert to fraction form
203,878.20/305,817.30 = 161,887.80/x - Step 3: Cross multiply
203,878.20x = 305,817.30 × 161,887.80 - Step 4: Simplify right side
203,878.20x = 49,508,089,898.94 - Step 5: Solve for x
x = 49,508,089,898.94/203,878.20 - Step 6: Final answer
x = 242,831.70
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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.