Finding the Fourth Proportional to 207,931.10, 311,896.65 and 74,815.70
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Solution
The fourth proportional to 207,931.10, 311,896.65 and 74,815.70 is: 112,223.55
Step by Step Solution
- Step 1: Write the proportion equation
207,931.10 : 311,896.65 = 74,815.70 : x - Step 2: Convert to fraction form
207,931.10/311,896.65 = 74,815.70/x - Step 3: Cross multiply
207,931.10x = 311,896.65 × 74,815.70 - Step 4: Simplify right side
207,931.10x = 23,334,766,197.41 - Step 5: Solve for x
x = 23,334,766,197.41/207,931.10 - Step 6: Final answer
x = 112,223.55
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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.