Finding the Fourth Proportional to 217,474.74, 300,115.53 and 121,981.14
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Solution
The fourth proportional to 217,474.74, 300,115.53 and 121,981.14 is: 168,334.19
Step by Step Solution
- Step 1: Write the proportion equation
217,474.74 : 300,115.53 = 121,981.14 : x - Step 2: Convert to fraction form
217,474.74/300,115.53 = 121,981.14/x - Step 3: Cross multiply
217,474.74x = 300,115.53 × 121,981.14 - Step 4: Simplify right side
217,474.74x = 36,608,434,481.10 - Step 5: Solve for x
x = 36,608,434,481.10/217,474.74 - Step 6: Final answer
x = 168,334.19
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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.