Finding the Fourth Proportional to 315,358.21, 473,099.63 and 115,680.45
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Solution
The fourth proportional to 315,358.21, 473,099.63 and 115,680.45 is: 173,543.53
Step by Step Solution
- Step 1: Write the proportion equation
315,358.21 : 473,099.63 = 115,680.45 : x - Step 2: Convert to fraction form
315,358.21/473,099.63 = 115,680.45/x - Step 3: Cross multiply
315,358.21x = 473,099.63 × 115,680.45 - Step 4: Simplify right side
315,358.21x = 54,728,378,093.23 - Step 5: Solve for x
x = 54,728,378,093.23/315,358.21 - Step 6: Final answer
x = 173,543.53
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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.