Finding the Fourth Proportional to 216,742.28, 299,113.49 and 133,974.65
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Solution
The fourth proportional to 216,742.28, 299,113.49 and 133,974.65 is: 184,890.68
Step by Step Solution
- Step 1: Write the proportion equation
216,742.28 : 299,113.49 = 133,974.65 : x - Step 2: Convert to fraction form
216,742.28/299,113.49 = 133,974.65/x - Step 3: Cross multiply
216,742.28x = 299,113.49 × 133,974.65 - Step 4: Simplify right side
216,742.28x = 40,073,626,215.75 - Step 5: Solve for x
x = 40,073,626,215.75/216,742.28 - Step 6: Final answer
x = 184,890.68
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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.