Finding the Fourth Proportional to 378,528.13, 522,380.49 and 217,415.50
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Solution
The fourth proportional to 378,528.13, 522,380.49 and 217,415.50 is: 300,040.09
Step by Step Solution
- Step 1: Write the proportion equation
378,528.13 : 522,380.49 = 217,415.50 : x - Step 2: Convert to fraction form
378,528.13/522,380.49 = 217,415.50/x - Step 3: Cross multiply
378,528.13x = 522,380.49 × 217,415.50 - Step 4: Simplify right side
378,528.13x = 113,573,615,423.60 - Step 5: Solve for x
x = 113,573,615,423.60/378,528.13 - Step 6: Final answer
x = 300,040.09
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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.