Finding the Fourth Proportional to 243,469.80, 365,243.92 and 74,990.08
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Solution
The fourth proportional to 243,469.80, 365,243.92 and 74,990.08 is: 112,497.20
Step by Step Solution
- Step 1: Write the proportion equation
243,469.80 : 365,243.92 = 74,990.08 : x - Step 2: Convert to fraction form
243,469.80/365,243.92 = 74,990.08/x - Step 3: Cross multiply
243,469.80x = 365,243.92 × 74,990.08 - Step 4: Simplify right side
243,469.80x = 27,389,670,780.31 - Step 5: Solve for x
x = 27,389,670,780.31/243,469.80 - Step 6: Final answer
x = 112,497.20
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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.