Finding the Fourth Proportional to 421,471.71, 632,207.57 and 155,133.99
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Solution
The fourth proportional to 421,471.71, 632,207.57 and 155,133.99 is: 232,700.99
Step by Step Solution
- Step 1: Write the proportion equation
421,471.71 : 632,207.57 = 155,133.99 : x - Step 2: Convert to fraction form
421,471.71/632,207.57 = 155,133.99/x - Step 3: Cross multiply
421,471.71x = 632,207.57 × 155,133.99 - Step 4: Simplify right side
421,471.71x = 98,076,882,066.63 - Step 5: Solve for x
x = 98,076,882,066.63/421,471.71 - Step 6: Final answer
x = 232,700.99
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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.