Finding the Fourth Proportional to 409,260.12, 613,831.86 and 128,770.08
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Solution
The fourth proportional to 409,260.12, 613,831.86 and 128,770.08 is: 193,136.77
Step by Step Solution
- Step 1: Write the proportion equation
409,260.12 : 613,831.86 = 128,770.08 : x - Step 2: Convert to fraction form
409,260.12/613,831.86 = 128,770.08/x - Step 3: Cross multiply
409,260.12x = 613,831.86 × 128,770.08 - Step 4: Simplify right side
409,260.12x = 79,043,177,718.75 - Step 5: Solve for x
x = 79,043,177,718.75/409,260.12 - Step 6: Final answer
x = 193,136.77
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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.