Finding the Fourth Proportional to 209,278.17, 288,815.68 and 113,782.81
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Solution
The fourth proportional to 209,278.17, 288,815.68 and 113,782.81 is: 157,026.70
Step by Step Solution
- Step 1: Write the proportion equation
209,278.17 : 288,815.68 = 113,782.81 : x - Step 2: Convert to fraction form
209,278.17/288,815.68 = 113,782.81/x - Step 3: Cross multiply
209,278.17x = 288,815.68 × 113,782.81 - Step 4: Simplify right side
209,278.17x = 32,862,259,642.46 - Step 5: Solve for x
x = 32,862,259,642.46/209,278.17 - Step 6: Final answer
x = 157,026.70
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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.