Finding the Fourth Proportional to 352,811.70, 486,921.88 and 209,572.31
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Solution
The fourth proportional to 352,811.70, 486,921.88 and 209,572.31 is: 289,234.58
Step by Step Solution
- Step 1: Write the proportion equation
352,811.70 : 486,921.88 = 209,572.31 : x - Step 2: Convert to fraction form
352,811.70/486,921.88 = 209,572.31/x - Step 3: Cross multiply
352,811.70x = 486,921.88 × 209,572.31 - Step 4: Simplify right side
352,811.70x = 102,045,344,660.41 - Step 5: Solve for x
x = 102,045,344,660.41/352,811.70 - Step 6: Final answer
x = 289,234.58
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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.