Finding the Fourth Proportional to 431,822.40, 647,539.20 and 195,043.20
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Solution
The fourth proportional to 431,822.40, 647,539.20 and 195,043.20 is: 292,476.99
Step by Step Solution
- Step 1: Write the proportion equation
431,822.40 : 647,539.20 = 195,043.20 : x - Step 2: Convert to fraction form
431,822.40/647,539.20 = 195,043.20/x - Step 3: Cross multiply
431,822.40x = 647,539.20 × 195,043.20 - Step 4: Simplify right side
431,822.40x = 126,298,117,693.44 - Step 5: Solve for x
x = 126,298,117,693.44/431,822.40 - Step 6: Final answer
x = 292,476.99
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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.