Finding the Fourth Proportional to 398,545.20, 598,739.40 and 274,129.20
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Solution
The fourth proportional to 398,545.20, 598,739.40 and 274,129.20 is: 411,827.70
Step by Step Solution
- Step 1: Write the proportion equation
398,545.20 : 598,739.40 = 274,129.20 : x - Step 2: Convert to fraction form
398,545.20/598,739.40 = 274,129.20/x - Step 3: Cross multiply
398,545.20x = 598,739.40 × 274,129.20 - Step 4: Simplify right side
398,545.20x = 164,131,952,730.48 - Step 5: Solve for x
x = 164,131,952,730.48/398,545.20 - Step 6: Final answer
x = 411,827.70
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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.