Finding the Fourth Proportional to 389,418.18, 584,124.42 and 209,588.05
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Solution
The fourth proportional to 389,418.18, 584,124.42 and 209,588.05 is: 314,380.54
Step by Step Solution
- Step 1: Write the proportion equation
389,418.18 : 584,124.42 = 209,588.05 : x - Step 2: Convert to fraction form
389,418.18/584,124.42 = 209,588.05/x - Step 3: Cross multiply
389,418.18x = 584,124.42 × 209,588.05 - Step 4: Simplify right side
389,418.18x = 122,425,498,145.18 - Step 5: Solve for x
x = 122,425,498,145.18/389,418.18 - Step 6: Final answer
x = 314,380.54
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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.