Finding the Fourth Proportional to 286,694.40, 395,639.29 and 157,640.99
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Solution
The fourth proportional to 286,694.40, 395,639.29 and 157,640.99 is: 217,545.12
Step by Step Solution
- Step 1: Write the proportion equation
286,694.40 : 395,639.29 = 157,640.99 : x - Step 2: Convert to fraction form
286,694.40/395,639.29 = 157,640.99/x - Step 3: Cross multiply
286,694.40x = 395,639.29 × 157,640.99 - Step 4: Simplify right side
286,694.40x = 62,368,967,565.92 - Step 5: Solve for x
x = 62,368,967,565.92/286,694.40 - Step 6: Final answer
x = 217,545.12
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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.