Finding the Fourth Proportional to 312,365.70, 430,842.42 and 215,606.88
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Solution
The fourth proportional to 312,365.70, 430,842.42 and 215,606.88 is: 297,384.09
Step by Step Solution
- Step 1: Write the proportion equation
312,365.70 : 430,842.42 = 215,606.88 : x - Step 2: Convert to fraction form
312,365.70/430,842.42 = 215,606.88/x - Step 3: Cross multiply
312,365.70x = 430,842.42 × 215,606.88 - Step 4: Simplify right side
312,365.70x = 92,892,589,947.85 - Step 5: Solve for x
x = 92,892,589,947.85/312,365.70 - Step 6: Final answer
x = 297,384.09
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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.