Finding the Fourth Proportional to 216,865.51, 299,274.36 and 121,372.20
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Solution
The fourth proportional to 216,865.51, 299,274.36 and 121,372.20 is: 167,493.61
Step by Step Solution
- Step 1: Write the proportion equation
216,865.51 : 299,274.36 = 121,372.20 : x - Step 2: Convert to fraction form
216,865.51/299,274.36 = 121,372.20/x - Step 3: Cross multiply
216,865.51x = 299,274.36 × 121,372.20 - Step 4: Simplify right side
216,865.51x = 36,323,587,476.79 - Step 5: Solve for x
x = 36,323,587,476.79/216,865.51 - Step 6: Final answer
x = 167,493.61
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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.