Finding the Fourth Proportional to 355,569.57, 490,782.78 and 202,688.28
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Solution
The fourth proportional to 355,569.57, 490,782.78 and 202,688.28 is: 279,764.99
Step by Step Solution
- Step 1: Write the proportion equation
355,569.57 : 490,782.78 = 202,688.28 : x - Step 2: Convert to fraction form
355,569.57/490,782.78 = 202,688.28/x - Step 3: Cross multiply
355,569.57x = 490,782.78 × 202,688.28 - Step 4: Simplify right side
355,569.57x = 99,475,917,531.82 - Step 5: Solve for x
x = 99,475,917,531.82/355,569.57 - Step 6: Final answer
x = 279,764.99
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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.