Finding the Fourth Proportional to 405,916.14, 608,694.21 and 216,341.18
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Solution
The fourth proportional to 405,916.14, 608,694.21 and 216,341.18 is: 324,415.83
Step by Step Solution
- Step 1: Write the proportion equation
405,916.14 : 608,694.21 = 216,341.18 : x - Step 2: Convert to fraction form
405,916.14/608,694.21 = 216,341.18/x - Step 3: Cross multiply
405,916.14x = 608,694.21 × 216,341.18 - Step 4: Simplify right side
405,916.14x = 131,685,620,607.10 - Step 5: Solve for x
x = 131,685,620,607.10/405,916.14 - Step 6: Final answer
x = 324,415.83
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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.