Finding the Fourth Proportional to 217,336.48, 299,924.14 and 121,843.19
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Solution
The fourth proportional to 217,336.48, 299,924.14 and 121,843.19 is: 168,143.49
Step by Step Solution
- Step 1: Write the proportion equation
217,336.48 : 299,924.14 = 121,843.19 : x - Step 2: Convert to fraction form
217,336.48/299,924.14 = 121,843.19/x - Step 3: Cross multiply
217,336.48x = 299,924.14 × 121,843.19 - Step 4: Simplify right side
217,336.48x = 36,543,713,975.61 - Step 5: Solve for x
x = 36,543,713,975.61/217,336.48 - Step 6: Final answer
x = 168,143.49
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1.5x scale
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.