Finding the Fourth Proportional to 286,889.40, 430,334.10 and 207,631.80
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Solution
The fourth proportional to 286,889.40, 430,334.10 and 207,631.80 is: 311,447.70
Step by Step Solution
- Step 1: Write the proportion equation
286,889.40 : 430,334.10 = 207,631.80 : x - Step 2: Convert to fraction form
286,889.40/430,334.10 = 207,631.80/x - Step 3: Cross multiply
286,889.40x = 430,334.10 × 207,631.80 - Step 4: Simplify right side
286,889.40x = 89,351,043,784.38 - Step 5: Solve for x
x = 89,351,043,784.38/286,889.40 - Step 6: Final answer
x = 311,447.70
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1.5x scale
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.