Finding the Fourth Proportional to 379,153.99, 523,228.16 and 218,009.68
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Solution
The fourth proportional to 379,153.99, 523,228.16 and 218,009.68 is: 300,850.86
Step by Step Solution
- Step 1: Write the proportion equation
379,153.99 : 523,228.16 = 218,009.68 : x - Step 2: Convert to fraction form
379,153.99/523,228.16 = 218,009.68/x - Step 3: Cross multiply
379,153.99x = 523,228.16 × 218,009.68 - Step 4: Simplify right side
379,153.99x = 114,068,803,728.59 - Step 5: Solve for x
x = 114,068,803,728.59/379,153.99 - Step 6: Final answer
x = 300,850.86
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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.