Finding the Fourth Proportional to 217,331.51, 299,917.08 and 121,838.18
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Solution
The fourth proportional to 217,331.51, 299,917.08 and 121,838.18 is: 168,136.46
Step by Step Solution
- Step 1: Write the proportion equation
217,331.51 : 299,917.08 = 121,838.18 : x - Step 2: Convert to fraction form
217,331.51/299,917.08 = 121,838.18/x - Step 3: Cross multiply
217,331.51x = 299,917.08 × 121,838.18 - Step 4: Simplify right side
217,331.51x = 36,541,349,678.53 - Step 5: Solve for x
x = 36,541,349,678.53/217,331.51 - Step 6: Final answer
x = 168,136.46
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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.