Finding the Fourth Proportional to 419,718.05, 629,762.96 and 219,990.95
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Solution
The fourth proportional to 419,718.05, 629,762.96 and 219,990.95 is: 330,083.85
Step by Step Solution
- Step 1: Write the proportion equation
419,718.05 : 629,762.96 = 219,990.95 : x - Step 2: Convert to fraction form
419,718.05/629,762.96 = 219,990.95/x - Step 3: Cross multiply
419,718.05x = 629,762.96 × 219,990.95 - Step 4: Simplify right side
419,718.05x = 138,542,149,246.38 - Step 5: Solve for x
x = 138,542,149,246.38/419,718.05 - Step 6: Final answer
x = 330,083.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.