Finding the Fourth Proportional to 287,451.79, 431,018.97 and 133,409.84
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Solution
The fourth proportional to 287,451.79, 431,018.97 and 133,409.84 is: 200,041.09
Step by Step Solution
- Step 1: Write the proportion equation
287,451.79 : 431,018.97 = 133,409.84 : x - Step 2: Convert to fraction form
287,451.79/431,018.97 = 133,409.84/x - Step 3: Cross multiply
287,451.79x = 431,018.97 × 133,409.84 - Step 4: Simplify right side
287,451.79x = 57,502,169,919.71 - Step 5: Solve for x
x = 57,502,169,919.71/287,451.79 - Step 6: Final answer
x = 200,041.09
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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.