Finding the Fourth Proportional to 216,877.30, 299,290.64 and 121,383.99
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Solution
The fourth proportional to 216,877.30, 299,290.64 and 121,383.99 is: 167,509.89
Step by Step Solution
- Step 1: Write the proportion equation
216,877.30 : 299,290.64 = 121,383.99 : x - Step 2: Convert to fraction form
216,877.30/299,290.64 = 121,383.99/x - Step 3: Cross multiply
216,877.30x = 299,290.64 × 121,383.99 - Step 4: Simplify right side
216,877.30x = 36,329,091,445.93 - Step 5: Solve for x
x = 36,329,091,445.93/216,877.30 - Step 6: Final answer
x = 167,509.89
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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.