Finding the Fourth Proportional to 216,721.22, 299,072.97 and 121,228.70
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Solution
The fourth proportional to 216,721.22, 299,072.97 and 121,228.70 is: 167,294.31
Step by Step Solution
- Step 1: Write the proportion equation
216,721.22 : 299,072.97 = 121,228.70 : x - Step 2: Convert to fraction form
216,721.22/299,072.97 = 121,228.70/x - Step 3: Cross multiply
216,721.22x = 299,072.97 × 121,228.70 - Step 4: Simplify right side
216,721.22x = 36,256,225,862.87 - Step 5: Solve for x
x = 36,256,225,862.87/216,721.22 - Step 6: Final answer
x = 167,294.31
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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.