Finding the Fourth Proportional to 290,814.70, 408,073.70 and 290,814.70
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Solution
The fourth proportional to 290,814.70, 408,073.70 and 290,814.70 is: 408,073.70
Step by Step Solution
- Step 1: Write the proportion equation
290,814.70 : 408,073.70 = 290,814.70 : x - Step 2: Convert to fraction form
290,814.70/408,073.70 = 290,814.70/x - Step 3: Cross multiply
290,814.70x = 408,073.70 × 290,814.70 - Step 4: Simplify right side
290,814.70x = 118,673,830,643.39 - Step 5: Solve for x
x = 118,673,830,643.39/290,814.70 - Step 6: Final answer
x = 408,073.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.