Finding the Fourth Proportional to 278,709.87, 418,036.35 and 76,323.99
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Solution
The fourth proportional to 278,709.87, 418,036.35 and 76,323.99 is: 114,478.19
Step by Step Solution
- Step 1: Write the proportion equation
278,709.87 : 418,036.35 = 76,323.99 : x - Step 2: Convert to fraction form
278,709.87/418,036.35 = 76,323.99/x - Step 3: Cross multiply
278,709.87x = 418,036.35 × 76,323.99 - Step 4: Simplify right side
278,709.87x = 31,906,202,197.04 - Step 5: Solve for x
x = 31,906,202,197.04/278,709.87 - Step 6: Final answer
x = 114,478.19
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.