Finding the Fourth Proportional to 198,311,419.97, 273,381,330.65 and 138,587,291.55
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Solution
The fourth proportional to 198,311,419.97, 273,381,330.65 and 138,587,291.55 is: 191,048,897.64
Step by Step Solution
- Step 1: Write the proportion equation
198,311,419.97 : 273,381,330.65 = 138,587,291.55 : x - Step 2: Convert to fraction form
198,311,419.97/273,381,330.65 = 138,587,291.55/x - Step 3: Cross multiply
198,311,419.97x = 273,381,330.65 × 138,587,291.55 - Step 4: Simplify right side
198,311,419.97x = 37,887,178,174,425,568 - Step 5: Solve for x
x = 37,887,178,174,425,568/198,311,419.97 - Step 6: Final answer
x = 191,048,897.64
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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.