Finding the Fourth Proportional to 386,879.04, 533,893.36 and 217,113.14
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Solution
The fourth proportional to 386,879.04, 533,893.36 and 217,113.14 is: 299,616.29
Step by Step Solution
- Step 1: Write the proportion equation
386,879.04 : 533,893.36 = 217,113.14 : x - Step 2: Convert to fraction form
386,879.04/533,893.36 = 217,113.14/x - Step 3: Cross multiply
386,879.04x = 533,893.36 × 217,113.14 - Step 4: Simplify right side
386,879.04x = 115,915,263,814.75 - Step 5: Solve for x
x = 115,915,263,814.75/386,879.04 - Step 6: Final answer
x = 299,616.29
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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.