Finding the Fourth Proportional to 398,393.44, 549,782.94 and 219,545.44
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Solution
The fourth proportional to 398,393.44, 549,782.94 and 219,545.44 is: 302,972.70
Step by Step Solution
- Step 1: Write the proportion equation
398,393.44 : 549,782.94 = 219,545.44 : x - Step 2: Convert to fraction form
398,393.44/549,782.94 = 219,545.44/x - Step 3: Cross multiply
398,393.44x = 549,782.94 × 219,545.44 - Step 4: Simplify right side
398,393.44x = 120,702,336,915.63 - Step 5: Solve for x
x = 120,702,336,915.63/398,393.44 - Step 6: Final answer
x = 302,972.70
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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.