Finding the Fourth Proportional to 394,841.16, 592,199.78 and 128,599.42
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Solution
The fourth proportional to 394,841.16, 592,199.78 and 128,599.42 is: 192,878.95
Step by Step Solution
- Step 1: Write the proportion equation
394,841.16 : 592,199.78 = 128,599.42 : x - Step 2: Convert to fraction form
394,841.16/592,199.78 = 128,599.42/x - Step 3: Cross multiply
394,841.16x = 592,199.78 × 128,599.42 - Step 4: Simplify right side
394,841.16x = 76,156,548,232.13 - Step 5: Solve for x
x = 76,156,548,232.13/394,841.16 - Step 6: Final answer
x = 192,878.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.