Finding the Fourth Proportional to 324,128.13, 486,192.20 and 87,470.79
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Solution
The fourth proportional to 324,128.13, 486,192.20 and 87,470.79 is: 131,206.19
Step by Step Solution
- Step 1: Write the proportion equation
324,128.13 : 486,192.20 = 87,470.79 : x - Step 2: Convert to fraction form
324,128.13/486,192.20 = 87,470.79/x - Step 3: Cross multiply
324,128.13x = 486,192.20 × 87,470.79 - Step 4: Simplify right side
324,128.13x = 42,527,615,388.48 - Step 5: Solve for x
x = 42,527,615,388.48/324,128.13 - Step 6: Final answer
x = 131,206.19
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1.5x scale
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.