Finding the Fourth Proportional to 215,877.80, 323,816.70 and 157,125.80
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Solution
The fourth proportional to 215,877.80, 323,816.70 and 157,125.80 is: 235,688.70
Step by Step Solution
- Step 1: Write the proportion equation
215,877.80 : 323,816.70 = 157,125.80 : x - Step 2: Convert to fraction form
215,877.80/323,816.70 = 157,125.80/x - Step 3: Cross multiply
215,877.80x = 323,816.70 × 157,125.80 - Step 4: Simplify right side
215,877.80x = 50,879,958,040.86 - Step 5: Solve for x
x = 50,879,958,040.86/215,877.80 - Step 6: Final answer
x = 235,688.70
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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.