Finding the Fourth Proportional to 278,557.99, 384,419.22 and 157,696.77
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Solution
The fourth proportional to 278,557.99, 384,419.22 and 157,696.77 is: 217,626.75
Step by Step Solution
- Step 1: Write the proportion equation
278,557.99 : 384,419.22 = 157,696.77 : x - Step 2: Convert to fraction form
278,557.99/384,419.22 = 157,696.77/x - Step 3: Cross multiply
278,557.99x = 384,419.22 × 157,696.77 - Step 4: Simplify right side
278,557.99x = 60,621,670,170.13 - Step 5: Solve for x
x = 60,621,670,170.13/278,557.99 - Step 6: Final answer
x = 217,626.75
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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.