Finding the Fourth Proportional to 642,153.42, 886,161.96 and 351,762.66
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Solution
The fourth proportional to 642,153.42, 886,161.96 and 351,762.66 is: 485,427.12
Step by Step Solution
- Step 1: Write the proportion equation
642,153.42 : 886,161.96 = 351,762.66 : x - Step 2: Convert to fraction form
642,153.42/886,161.96 = 351,762.66/x - Step 3: Cross multiply
642,153.42x = 886,161.96 × 351,762.66 - Step 4: Simplify right side
642,153.42x = 311,718,688,240.41 - Step 5: Solve for x
x = 311,718,688,240.41/642,153.42 - Step 6: Final answer
x = 485,427.12
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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.