Finding the Fourth Proportional to 228,711.20, 315,612.90 and 131,918.99
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Solution
The fourth proportional to 228,711.20, 315,612.90 and 131,918.99 is: 182,043.27
Step by Step Solution
- Step 1: Write the proportion equation
228,711.20 : 315,612.90 = 131,918.99 : x - Step 2: Convert to fraction form
228,711.20/315,612.90 = 131,918.99/x - Step 3: Cross multiply
228,711.20x = 315,612.90 × 131,918.99 - Step 4: Simplify right side
228,711.20x = 41,635,333,420.91 - Step 5: Solve for x
x = 41,635,333,420.91/228,711.20 - Step 6: Final answer
x = 182,043.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.