Finding the Fourth Proportional to 459,299.79, 688,976.49 and 139,462.09
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Solution
The fourth proportional to 459,299.79, 688,976.49 and 139,462.09 is: 209,201.27
Step by Step Solution
- Step 1: Write the proportion equation
459,299.79 : 688,976.49 = 139,462.09 : x - Step 2: Convert to fraction form
459,299.79/688,976.49 = 139,462.09/x - Step 3: Cross multiply
459,299.79x = 688,976.49 × 139,462.09 - Step 4: Simplify right side
459,299.79x = 96,086,100,056.81 - Step 5: Solve for x
x = 96,086,100,056.81/459,299.79 - Step 6: Final answer
x = 209,201.27
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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.