Finding the Fourth Proportional to 303,435.12, 418,897.95 and 221,671.62
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Solution
The fourth proportional to 303,435.12, 418,897.95 and 221,671.62 is: 306,021.88
Step by Step Solution
- Step 1: Write the proportion equation
303,435.12 : 418,897.95 = 221,671.62 : x - Step 2: Convert to fraction form
303,435.12/418,897.95 = 221,671.62/x - Step 3: Cross multiply
303,435.12x = 418,897.95 × 221,671.62 - Step 4: Simplify right side
303,435.12x = 92,857,787,191.18 - Step 5: Solve for x
x = 92,857,787,191.18/303,435.12 - Step 6: Final answer
x = 306,021.88
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1.5x scale
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.