Finding the Fourth Proportional to 397,063,420.11, 547,939,661.67 and 220,847,622.84
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Solution
The fourth proportional to 397,063,420.11, 547,939,661.67 and 220,847,622.84 is: 304,765,348.84
Step by Step Solution
- Step 1: Write the proportion equation
397,063,420.11 : 547,939,661.67 = 220,847,622.84 : x - Step 2: Convert to fraction form
397,063,420.11/547,939,661.67 = 220,847,622.84/x - Step 3: Cross multiply
397,063,420.11x = 547,939,661.67 × 220,847,622.84 - Step 4: Simplify right side
397,063,420.11x = 121,011,171,739,573,360 - Step 5: Solve for x
x = 121,011,171,739,573,360/397,063,420.11 - Step 6: Final answer
x = 304,765,348.84
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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.