Finding the Fourth Proportional to 198,479,432.97, 273,861,479.93 and 115,957,274.49
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Solution
The fourth proportional to 198,479,432.97, 273,861,479.93 and 115,957,274.49 is: 159,997,589.30
Step by Step Solution
- Step 1: Write the proportion equation
198,479,432.97 : 273,861,479.93 = 115,957,274.49 : x - Step 2: Convert to fraction form
198,479,432.97/273,861,479.93 = 115,957,274.49/x - Step 3: Cross multiply
198,479,432.97x = 273,861,479.93 × 115,957,274.49 - Step 4: Simplify right side
198,479,432.97x = 31,756,230,799,900,848 - Step 5: Solve for x
x = 31,756,230,799,900,848/198,479,432.97 - Step 6: Final answer
x = 159,997,589.30
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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.