Finding the Fourth Proportional to 315,312.75, 435,131.60 and 202,135.50
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Solution
The fourth proportional to 315,312.75, 435,131.60 and 202,135.50 is: 278,946.99
Step by Step Solution
- Step 1: Write the proportion equation
315,312.75 : 435,131.60 = 202,135.50 : x - Step 2: Convert to fraction form
315,312.75/435,131.60 = 202,135.50/x - Step 3: Cross multiply
315,312.75x = 435,131.60 × 202,135.50 - Step 4: Simplify right side
315,312.75x = 87,955,542,521.12 - Step 5: Solve for x
x = 87,955,542,521.12/315,312.75 - Step 6: Final answer
x = 278,946.99
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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.