Finding the Fourth Proportional to 315,716.68, 435,687.42 and 172,484.92
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Solution
The fourth proportional to 315,716.68, 435,687.42 and 172,484.92 is: 238,028.32
Step by Step Solution
- Step 1: Write the proportion equation
315,716.68 : 435,687.42 = 172,484.92 : x - Step 2: Convert to fraction form
315,716.68/435,687.42 = 172,484.92/x - Step 3: Cross multiply
315,716.68x = 435,687.42 × 172,484.92 - Step 4: Simplify right side
315,716.68x = 75,149,509,783.71 - Step 5: Solve for x
x = 75,149,509,783.71/315,716.68 - Step 6: Final answer
x = 238,028.32
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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.