Finding the Fourth Proportional to 315,794.18, 435,783.12 and 172,559.18
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Solution
The fourth proportional to 315,794.18, 435,783.12 and 172,559.18 is: 238,124.65
Step by Step Solution
- Step 1: Write the proportion equation
315,794.18 : 435,783.12 = 172,559.18 : x - Step 2: Convert to fraction form
315,794.18/435,783.12 = 172,559.18/x - Step 3: Cross multiply
315,794.18x = 435,783.12 × 172,559.18 - Step 4: Simplify right side
315,794.18x = 75,198,377,845.04 - Step 5: Solve for x
x = 75,198,377,845.04/315,794.18 - Step 6: Final answer
x = 238,124.65
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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.