Finding the Fourth Proportional to 398,825.34, 550,385.52 and 217,537.26
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Solution
The fourth proportional to 398,825.34, 550,385.52 and 217,537.26 is: 300,204.99
Step by Step Solution
- Step 1: Write the proportion equation
398,825.34 : 550,385.52 = 217,537.26 : x - Step 2: Convert to fraction form
398,825.34/550,385.52 = 217,537.26/x - Step 3: Cross multiply
398,825.34x = 550,385.52 × 217,537.26 - Step 4: Simplify right side
398,825.34x = 119,729,357,964.48 - Step 5: Solve for x
x = 119,729,357,964.48/398,825.34 - Step 6: Final answer
x = 300,204.99
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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.