Finding the Fourth Proportional to 398,979.80, 598,469.70 and 146,259.80
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Solution
The fourth proportional to 398,979.80, 598,469.70 and 146,259.80 is: 219,389.70
Step by Step Solution
- Step 1: Write the proportion equation
398,979.80 : 598,469.70 = 146,259.80 : x - Step 2: Convert to fraction form
398,979.80/598,469.70 = 146,259.80/x - Step 3: Cross multiply
398,979.80x = 598,469.70 × 146,259.80 - Step 4: Simplify right side
398,979.80x = 87,532,058,628.06 - Step 5: Solve for x
x = 87,532,058,628.06/398,979.80 - Step 6: Final answer
x = 219,389.70
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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.