Finding the Fourth Proportional to 312,239.12, 430,897.82 and 191,446.99
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Solution
The fourth proportional to 312,239.12, 430,897.82 and 191,446.99 is: 264,201.65
Step by Step Solution
- Step 1: Write the proportion equation
312,239.12 : 430,897.82 = 191,446.99 : x - Step 2: Convert to fraction form
312,239.12/430,897.82 = 191,446.99/x - Step 3: Cross multiply
312,239.12x = 430,897.82 × 191,446.99 - Step 4: Simplify right side
312,239.12x = 82,494,088,602.08 - Step 5: Solve for x
x = 82,494,088,602.08/312,239.12 - Step 6: Final answer
x = 264,201.65
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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.