Finding the Fourth Proportional to 354,663.38, 489,368.49 and 211,436.75
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Solution
The fourth proportional to 354,663.38, 489,368.49 and 211,436.75 is: 291,742.79
Step by Step Solution
- Step 1: Write the proportion equation
354,663.38 : 489,368.49 = 211,436.75 : x - Step 2: Convert to fraction form
354,663.38/489,368.49 = 211,436.75/x - Step 3: Cross multiply
354,663.38x = 489,368.49 × 211,436.75 - Step 4: Simplify right side
354,663.38x = 103,470,483,078.01 - Step 5: Solve for x
x = 103,470,483,078.01/354,663.38 - Step 6: Final answer
x = 291,742.79
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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.