Finding the Fourth Proportional to 392,474,108.74, 541,589,862.33 and 216,252,242.55
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Solution
The fourth proportional to 392,474,108.74, 541,589,862.33 and 216,252,242.55 is: 298,414,646.12
Step by Step Solution
- Step 1: Write the proportion equation
392,474,108.74 : 541,589,862.33 = 216,252,242.55 : x - Step 2: Convert to fraction form
392,474,108.74/541,589,862.33 = 216,252,242.55/x - Step 3: Cross multiply
392,474,108.74x = 541,589,862.33 × 216,252,242.55 - Step 4: Simplify right side
392,474,108.74x = 117,120,022,271,208,288 - Step 5: Solve for x
x = 117,120,022,271,208,288/392,474,108.74 - Step 6: Final answer
x = 298,414,646.12
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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.