Finding the Fourth Proportional to 212,379.21, 318,623.99 and 79,260.48
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Solution
The fourth proportional to 212,379.21, 318,623.99 and 79,260.48 is: 118,911.31
Step by Step Solution
- Step 1: Write the proportion equation
212,379.21 : 318,623.99 = 79,260.48 : x - Step 2: Convert to fraction form
212,379.21/318,623.99 = 79,260.48/x - Step 3: Cross multiply
212,379.21x = 318,623.99 × 79,260.48 - Step 4: Simplify right side
212,379.21x = 25,254,289,990.61 - Step 5: Solve for x
x = 25,254,289,990.61/212,379.21 - Step 6: Final answer
x = 118,911.31
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1.5x scale
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.