Finding the Fourth Proportional to 372,409.75, 513,921.14 and 202,640.95
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Solution
The fourth proportional to 372,409.75, 513,921.14 and 202,640.95 is: 279,642.16
Step by Step Solution
- Step 1: Write the proportion equation
372,409.75 : 513,921.14 = 202,640.95 : x - Step 2: Convert to fraction form
372,409.75/513,921.14 = 202,640.95/x - Step 3: Cross multiply
372,409.75x = 513,921.14 × 202,640.95 - Step 4: Simplify right side
372,409.75x = 104,141,467,021.48 - Step 5: Solve for x
x = 104,141,467,021.48/372,409.75 - Step 6: Final answer
x = 279,642.16
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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.