Finding the Fourth Proportional to 209,282.20, 313,916.36 and 90,953.68
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Solution
The fourth proportional to 209,282.20, 313,916.36 and 90,953.68 is: 136,427.50
Step by Step Solution
- Step 1: Write the proportion equation
209,282.20 : 313,916.36 = 90,953.68 : x - Step 2: Convert to fraction form
209,282.20/313,916.36 = 90,953.68/x - Step 3: Cross multiply
209,282.20x = 313,916.36 × 90,953.68 - Step 4: Simplify right side
209,282.20x = 28,551,848,154.20 - Step 5: Solve for x
x = 28,551,848,154.20/209,282.20 - Step 6: Final answer
x = 136,427.50
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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.