Finding the Fourth Proportional to 229,981.70, 317,366.96 and 129,360.26
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Solution
The fourth proportional to 229,981.70, 317,366.96 and 129,360.26 is: 178,512.78
Step by Step Solution
- Step 1: Write the proportion equation
229,981.70 : 317,366.96 = 129,360.26 : x - Step 2: Convert to fraction form
229,981.70/317,366.96 = 129,360.26/x - Step 3: Cross multiply
229,981.70x = 317,366.96 × 129,360.26 - Step 4: Simplify right side
229,981.70x = 41,054,672,461.01 - Step 5: Solve for x
x = 41,054,672,461.01/229,981.70 - Step 6: Final answer
x = 178,512.78
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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.