Finding the Fourth Proportional to 399,806.71, 551,718.28 and 218,517.19
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Solution
The fourth proportional to 399,806.71, 551,718.28 and 218,517.19 is: 301,545.53
Step by Step Solution
- Step 1: Write the proportion equation
399,806.71 : 551,718.28 = 218,517.19 : x - Step 2: Convert to fraction form
399,806.71/551,718.28 = 218,517.19/x - Step 3: Cross multiply
399,806.71x = 551,718.28 × 218,517.19 - Step 4: Simplify right side
399,806.71x = 120,559,928,217.23 - Step 5: Solve for x
x = 120,559,928,217.23/399,806.71 - Step 6: Final answer
x = 301,545.53
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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.