Finding the Fourth Proportional to 399,270.70, 598,906.05 and 257,553.10
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Solution
The fourth proportional to 399,270.70, 598,906.05 and 257,553.10 is: 386,329.65
Step by Step Solution
- Step 1: Write the proportion equation
399,270.70 : 598,906.05 = 257,553.10 : x - Step 2: Convert to fraction form
399,270.70/598,906.05 = 257,553.10/x - Step 3: Cross multiply
399,270.70x = 598,906.05 × 257,553.10 - Step 4: Simplify right side
399,270.70x = 154,250,109,786.26 - Step 5: Solve for x
x = 154,250,109,786.26/399,270.70 - Step 6: Final answer
x = 386,329.65
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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.