Finding the Fourth Proportional to 428,063.76, 642,101.93 and 203,447.12
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Solution
The fourth proportional to 428,063.76, 642,101.93 and 203,447.12 is: 305,173.66
Step by Step Solution
- Step 1: Write the proportion equation
428,063.76 : 642,101.93 = 203,447.12 : x - Step 2: Convert to fraction form
428,063.76/642,101.93 = 203,447.12/x - Step 3: Cross multiply
428,063.76x = 642,101.93 × 203,447.12 - Step 4: Simplify right side
428,063.76x = 130,633,784,177.20 - Step 5: Solve for x
x = 130,633,784,177.20/428,063.76 - Step 6: Final answer
x = 305,173.66
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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.