Finding the Fourth Proportional to 398,351.64, 549,718.18 and 217,064.84
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Solution
The fourth proportional to 398,351.64, 549,718.18 and 217,064.84 is: 299,545.62
Step by Step Solution
- Step 1: Write the proportion equation
398,351.64 : 549,718.18 = 217,064.84 : x - Step 2: Convert to fraction form
398,351.64/549,718.18 = 217,064.84/x - Step 3: Cross multiply
398,351.64x = 549,718.18 × 217,064.84 - Step 4: Simplify right side
398,351.64x = 119,324,488,786.79 - Step 5: Solve for x
x = 119,324,488,786.79/398,351.64 - Step 6: Final answer
x = 299,545.62
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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.