Finding the Fourth Proportional to 305,310.18, 421,260.69 and 176,221.38
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Solution
The fourth proportional to 305,310.18, 421,260.69 and 176,221.38 is: 243,146.63
Step by Step Solution
- Step 1: Write the proportion equation
305,310.18 : 421,260.69 = 176,221.38 : x - Step 2: Convert to fraction form
305,310.18/421,260.69 = 176,221.38/x - Step 3: Cross multiply
305,310.18x = 421,260.69 × 176,221.38 - Step 4: Simplify right side
305,310.18x = 74,235,140,131.55 - Step 5: Solve for x
x = 74,235,140,131.55/305,310.18 - Step 6: Final answer
x = 243,146.63
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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.