Finding the Fourth Proportional to 217,036.42, 299,522.71 and 121,542.28
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Solution
The fourth proportional to 217,036.42, 299,522.71 and 121,542.28 is: 167,735.32
Step by Step Solution
- Step 1: Write the proportion equation
217,036.42 : 299,522.71 = 121,542.28 : x - Step 2: Convert to fraction form
217,036.42/299,522.71 = 121,542.28/x - Step 3: Cross multiply
217,036.42x = 299,522.71 × 121,542.28 - Step 4: Simplify right side
217,036.42x = 36,404,673,085.18 - Step 5: Solve for x
x = 36,404,673,085.18/217,036.42 - Step 6: Final answer
x = 167,735.32
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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.