Finding the Fourth Proportional to 405,812.11, 608,711.99 and 139,574.94
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Solution
The fourth proportional to 405,812.11, 608,711.99 and 139,574.94 is: 209,360.29
Step by Step Solution
- Step 1: Write the proportion equation
405,812.11 : 608,711.99 = 139,574.94 : x - Step 2: Convert to fraction form
405,812.11/608,711.99 = 139,574.94/x - Step 3: Cross multiply
405,812.11x = 608,711.99 × 139,574.94 - Step 4: Simplify right side
405,812.11x = 84,960,939,481.53 - Step 5: Solve for x
x = 84,960,939,481.53/405,812.11 - Step 6: Final answer
x = 209,360.29
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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.