Finding the Fourth Proportional to 459,446.71, 689,170.07 and 209,953.75
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Solution
The fourth proportional to 459,446.71, 689,170.07 and 209,953.75 is: 314,930.63
Step by Step Solution
- Step 1: Write the proportion equation
459,446.71 : 689,170.07 = 209,953.75 : x - Step 2: Convert to fraction form
459,446.71/689,170.07 = 209,953.75/x - Step 3: Cross multiply
459,446.71x = 689,170.07 × 209,953.75 - Step 4: Simplify right side
459,446.71x = 144,693,839,534.49 - Step 5: Solve for x
x = 144,693,839,534.49/459,446.71 - Step 6: Final answer
x = 314,930.63
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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.