Finding the Fourth Proportional to 311,685.95, 430,126.70 and 177,549.95
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Solution
The fourth proportional to 311,685.95, 430,126.70 and 177,549.95 is: 245,018.98
Step by Step Solution
- Step 1: Write the proportion equation
311,685.95 : 430,126.70 = 177,549.95 : x - Step 2: Convert to fraction form
311,685.95/430,126.70 = 177,549.95/x - Step 3: Cross multiply
311,685.95x = 430,126.70 × 177,549.95 - Step 4: Simplify right side
311,685.95x = 76,368,971,040.28 - Step 5: Solve for x
x = 76,368,971,040.28/311,685.95 - Step 6: Final answer
x = 245,018.98
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.