Finding the Fourth Proportional to 398,720.02, 550,246.86 and 217,441.84
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Solution
The fourth proportional to 398,720.02, 550,246.86 and 217,441.84 is: 300,076.96
Step by Step Solution
- Step 1: Write the proportion equation
398,720.02 : 550,246.86 = 217,441.84 : x - Step 2: Convert to fraction form
398,720.02/550,246.86 = 217,441.84/x - Step 3: Cross multiply
398,720.02x = 550,246.86 × 217,441.84 - Step 4: Simplify right side
398,720.02x = 119,646,689,692.62 - Step 5: Solve for x
x = 119,646,689,692.62/398,720.02 - Step 6: Final answer
x = 300,076.96
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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.