Finding the Fourth Proportional to 216,509.76, 298,831.68 and 131,608.80
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Solution
The fourth proportional to 216,509.76, 298,831.68 and 131,608.80 is: 181,649.45
Step by Step Solution
- Step 1: Write the proportion equation
216,509.76 : 298,831.68 = 131,608.80 : x - Step 2: Convert to fraction form
216,509.76/298,831.68 = 131,608.80/x - Step 3: Cross multiply
216,509.76x = 298,831.68 × 131,608.80 - Step 4: Simplify right side
216,509.76x = 39,328,878,806.78 - Step 5: Solve for x
x = 39,328,878,806.78/216,509.76 - Step 6: Final answer
x = 181,649.45
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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.