Finding the Fourth Proportional to 354,378.81, 489,024.23 and 201,396.54
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Solution
The fourth proportional to 354,378.81, 489,024.23 and 201,396.54 is: 277,916.69
Step by Step Solution
- Step 1: Write the proportion equation
354,378.81 : 489,024.23 = 201,396.54 : x - Step 2: Convert to fraction form
354,378.81/489,024.23 = 201,396.54/x - Step 3: Cross multiply
354,378.81x = 489,024.23 × 201,396.54 - Step 4: Simplify right side
354,378.81x = 98,487,786,891.18 - Step 5: Solve for x
x = 98,487,786,891.18/354,378.81 - Step 6: Final answer
x = 277,916.69
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1.5x scale
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.