Finding the Fourth Proportional to 428,181.18, 642,286.35 and 203,425.62
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Solution
The fourth proportional to 428,181.18, 642,286.35 and 203,425.62 is: 305,145.36
Step by Step Solution
- Step 1: Write the proportion equation
428,181.18 : 642,286.35 = 203,425.62 : x - Step 2: Convert to fraction form
428,181.18/642,286.35 = 203,425.62/x - Step 3: Cross multiply
428,181.18x = 642,286.35 × 203,425.62 - Step 4: Simplify right side
428,181.18x = 130,657,498,966.29 - Step 5: Solve for x
x = 130,657,498,966.29/428,181.18 - Step 6: Final answer
x = 305,145.36
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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.