Finding the Fourth Proportional to 378,721.50, 522,652.35 and 217,627.08
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Solution
The fourth proportional to 378,721.50, 522,652.35 and 217,627.08 is: 300,334.96
Step by Step Solution
- Step 1: Write the proportion equation
378,721.50 : 522,652.35 = 217,627.08 : x - Step 2: Convert to fraction form
378,721.50/522,652.35 = 217,627.08/x - Step 3: Cross multiply
378,721.50x = 522,652.35 × 217,627.08 - Step 4: Simplify right side
378,721.50x = 113,743,304,785.64 - Step 5: Solve for x
x = 113,743,304,785.64/378,721.50 - Step 6: Final answer
x = 300,334.96
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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.