Finding the Fourth Proportional to 392,642,717.26, 541,871,192.08 and 216,430,315.18
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Solution
The fourth proportional to 392,642,717.26, 541,871,192.08 and 216,430,315.18 is: 298,687,197.63
Step by Step Solution
- Step 1: Write the proportion equation
392,642,717.26 : 541,871,192.08 = 216,430,315.18 : x - Step 2: Convert to fraction form
392,642,717.26/541,871,192.08 = 216,430,315.18/x - Step 3: Cross multiply
392,642,717.26x = 541,871,192.08 × 216,430,315.18 - Step 4: Simplify right side
392,642,717.26x = 117,277,352,888,836,736 - Step 5: Solve for x
x = 117,277,352,888,836,736/392,642,717.26 - Step 6: Final answer
x = 298,687,197.63
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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.