Finding the Fourth Proportional to 402,517.29, 555,479.61 and 221,245.98
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Solution
The fourth proportional to 402,517.29, 555,479.61 and 221,245.98 is: 305,322.61
Step by Step Solution
- Step 1: Write the proportion equation
402,517.29 : 555,479.61 = 221,245.98 : x - Step 2: Convert to fraction form
402,517.29/555,479.61 = 221,245.98/x - Step 3: Cross multiply
402,517.29x = 555,479.61 × 221,245.98 - Step 4: Simplify right side
402,517.29x = 122,897,630,684.47 - Step 5: Solve for x
x = 122,897,630,684.47/402,517.29 - Step 6: Final answer
x = 305,322.61
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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.