Finding the Fourth Proportional to 309,134.03, 426,391.92 and 217,447.79
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Solution
The fourth proportional to 309,134.03, 426,391.92 and 217,447.79 is: 299,928.09
Step by Step Solution
- Step 1: Write the proportion equation
309,134.03 : 426,391.92 = 217,447.79 : x - Step 2: Convert to fraction form
309,134.03/426,391.92 = 217,447.79/x - Step 3: Cross multiply
309,134.03x = 426,391.92 × 217,447.79 - Step 4: Simplify right side
309,134.03x = 92,717,978,545.90 - Step 5: Solve for x
x = 92,717,978,545.90/309,134.03 - Step 6: Final answer
x = 299,928.09
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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.