Finding the Fourth Proportional to 217,438.05, 300,066.68 and 121,942.70
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Solution
The fourth proportional to 217,438.05, 300,066.68 and 121,942.70 is: 168,282.14
Step by Step Solution
- Step 1: Write the proportion equation
217,438.05 : 300,066.68 = 121,942.70 : x - Step 2: Convert to fraction form
217,438.05/300,066.68 = 121,942.70/x - Step 3: Cross multiply
217,438.05x = 300,066.68 × 121,942.70 - Step 4: Simplify right side
217,438.05x = 36,590,939,943.76 - Step 5: Solve for x
x = 36,590,939,943.76/217,438.05 - Step 6: Final answer
x = 168,282.14
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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.