Finding the Fourth Proportional to 208,405,181.97, 312,703,236.45 and 90,266,076.72
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Solution
The fourth proportional to 208,405,181.97, 312,703,236.45 and 90,266,076.72 is: 135,440,462.97
Step by Step Solution
- Step 1: Write the proportion equation
208,405,181.97 : 312,703,236.45 = 90,266,076.72 : x - Step 2: Convert to fraction form
208,405,181.97/312,703,236.45 = 90,266,076.72/x - Step 3: Cross multiply
208,405,181.97x = 312,703,236.45 × 90,266,076.72 - Step 4: Simplify right side
208,405,181.97x = 28,226,494,331,988,000 - Step 5: Solve for x
x = 28,226,494,331,988,000/208,405,181.97 - Step 6: Final answer
x = 135,440,462.97
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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.