Finding the Fourth Proportional to 216,858.02, 299,270.79 and 121,364.49
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Solution
The fourth proportional to 216,858.02, 299,270.79 and 121,364.49 is: 167,486.76
Step by Step Solution
- Step 1: Write the proportion equation
216,858.02 : 299,270.79 = 121,364.49 : x - Step 2: Convert to fraction form
216,858.02/299,270.79 = 121,364.49/x - Step 3: Cross multiply
216,858.02x = 299,270.79 × 121,364.49 - Step 4: Simplify right side
216,858.02x = 36,320,846,800.25 - Step 5: Solve for x
x = 36,320,846,800.25/216,858.02 - Step 6: Final answer
x = 167,486.76
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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.