Finding the Fourth Proportional to 209,143.98, 288,620.28 and 113,651.06
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Solution
The fourth proportional to 209,143.98, 288,620.28 and 113,651.06 is: 156,839.32
Step by Step Solution
- Step 1: Write the proportion equation
209,143.98 : 288,620.28 = 113,651.06 : x - Step 2: Convert to fraction form
209,143.98/288,620.28 = 113,651.06/x - Step 3: Cross multiply
209,143.98x = 288,620.28 × 113,651.06 - Step 4: Simplify right side
209,143.98x = 32,801,999,316.40 - Step 5: Solve for x
x = 32,801,999,316.40/209,143.98 - Step 6: Final answer
x = 156,839.32
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1.5x scale
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.