Finding the Fourth Proportional to 392,577,542.88, 541,755,372.09 and 216,365,117.69
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Solution
The fourth proportional to 392,577,542.88, 541,755,372.09 and 216,365,117.69 is: 298,582,960.14
Step by Step Solution
- Step 1: Write the proportion equation
392,577,542.88 : 541,755,372.09 = 216,365,117.69 : x - Step 2: Convert to fraction form
392,577,542.88/541,755,372.09 = 216,365,117.69/x - Step 3: Cross multiply
392,577,542.88x = 541,755,372.09 × 216,365,117.69 - Step 4: Simplify right side
392,577,542.88x = 117,216,964,837,652,000 - Step 5: Solve for x
x = 117,216,964,837,652,000/392,577,542.88 - Step 6: Final answer
x = 298,582,960.14
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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.