Finding the Fourth Proportional to 209,698.80, 289,362.48 and 124,799.28
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Solution
The fourth proportional to 209,698.80, 289,362.48 and 124,799.28 is: 172,209.99
Step by Step Solution
- Step 1: Write the proportion equation
209,698.80 : 289,362.48 = 124,799.28 : x - Step 2: Convert to fraction form
209,698.80/289,362.48 = 124,799.28/x - Step 3: Cross multiply
209,698.80x = 289,362.48 × 124,799.28 - Step 4: Simplify right side
209,698.80x = 36,112,229,163.01 - Step 5: Solve for x
x = 36,112,229,163.01/209,698.80 - Step 6: Final answer
x = 172,209.99
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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.