Finding the Fourth Proportional to 286,176.95, 394,916.92 and 157,114.79
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Solution
The fourth proportional to 286,176.95, 394,916.92 and 157,114.79 is: 216,814.42
Step by Step Solution
- Step 1: Write the proportion equation
286,176.95 : 394,916.92 = 157,114.79 : x - Step 2: Convert to fraction form
286,176.95/394,916.92 = 157,114.79/x - Step 3: Cross multiply
286,176.95x = 394,916.92 × 157,114.79 - Step 4: Simplify right side
286,176.95x = 62,047,288,066.81 - Step 5: Solve for x
x = 62,047,288,066.81/286,176.95 - Step 6: Final answer
x = 216,814.42
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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.