Finding the Fourth Proportional to 379,456.06, 523,649.19 and 209,688.70
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Solution
The fourth proportional to 379,456.06, 523,649.19 and 209,688.70 is: 289,370.31
Step by Step Solution
- Step 1: Write the proportion equation
379,456.06 : 523,649.19 = 209,688.70 : x - Step 2: Convert to fraction form
379,456.06/523,649.19 = 209,688.70/x - Step 3: Cross multiply
379,456.06x = 523,649.19 × 209,688.70 - Step 4: Simplify right side
379,456.06x = 109,803,317,907.15 - Step 5: Solve for x
x = 109,803,317,907.15/379,456.06 - Step 6: Final answer
x = 289,370.31
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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.