Finding the Fourth Proportional to 378,757.12, 522,701.76 and 217,664.32
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Solution
The fourth proportional to 378,757.12, 522,701.76 and 217,664.32 is: 300,386.49
Step by Step Solution
- Step 1: Write the proportion equation
378,757.12 : 522,701.76 = 217,664.32 : x - Step 2: Convert to fraction form
378,757.12/522,701.76 = 217,664.32/x - Step 3: Cross multiply
378,757.12x = 522,701.76 × 217,664.32 - Step 4: Simplify right side
378,757.12x = 113,773,523,153.20 - Step 5: Solve for x
x = 113,773,523,153.20/378,757.12 - Step 6: Final answer
x = 300,386.49
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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.