Finding the Fourth Proportional to 352,138.70, 528,208.05 and 115,424.30
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Solution
The fourth proportional to 352,138.70, 528,208.05 and 115,424.30 is: 173,136.45
Step by Step Solution
- Step 1: Write the proportion equation
352,138.70 : 528,208.05 = 115,424.30 : x - Step 2: Convert to fraction form
352,138.70/528,208.05 = 115,424.30/x - Step 3: Cross multiply
352,138.70x = 528,208.05 × 115,424.30 - Step 4: Simplify right side
352,138.70x = 60,968,044,425.62 - Step 5: Solve for x
x = 60,968,044,425.62/352,138.70 - Step 6: Final answer
x = 173,136.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.