Finding the Fourth Proportional to 225,617.68, 311,318.76 and 139,663.12
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Solution
The fourth proportional to 225,617.68, 311,318.76 and 139,663.12 is: 192,714.28
Step by Step Solution
- Step 1: Write the proportion equation
225,617.68 : 311,318.76 = 139,663.12 : x - Step 2: Convert to fraction form
225,617.68/311,318.76 = 139,663.12/x - Step 3: Cross multiply
225,617.68x = 311,318.76 × 139,663.12 - Step 4: Simplify right side
225,617.68x = 43,479,749,336.13 - Step 5: Solve for x
x = 43,479,749,336.13/225,617.68 - Step 6: Final answer
x = 192,714.28
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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.