Finding the Fourth Proportional to 207,617.30, 311,425.95 and 155,129.30
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Solution
The fourth proportional to 207,617.30, 311,425.95 and 155,129.30 is: 232,693.95
Step by Step Solution
- Step 1: Write the proportion equation
207,617.30 : 311,425.95 = 155,129.30 : x - Step 2: Convert to fraction form
207,617.30/311,425.95 = 155,129.30/x - Step 3: Cross multiply
207,617.30x = 311,425.95 × 155,129.30 - Step 4: Simplify right side
207,617.30x = 48,311,289,625.34 - Step 5: Solve for x
x = 48,311,289,625.34/207,617.30 - Step 6: Final answer
x = 232,693.95
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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.