Finding the Fourth Proportional to 229,640.16, 316,908.72 and 129,039.84
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Solution
The fourth proportional to 229,640.16, 316,908.72 and 129,039.84 is: 178,077.96
Step by Step Solution
- Step 1: Write the proportion equation
229,640.16 : 316,908.72 = 129,039.84 : x - Step 2: Convert to fraction form
229,640.16/316,908.72 = 129,039.84/x - Step 3: Cross multiply
229,640.16x = 316,908.72 × 129,039.84 - Step 4: Simplify right side
229,640.16x = 40,893,850,523.40 - Step 5: Solve for x
x = 40,893,850,523.40/229,640.16 - Step 6: Final answer
x = 178,077.96
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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.