Finding the Fourth Proportional to 321,479.12, 482,152.80 and 121,730.60
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Solution
The fourth proportional to 321,479.12, 482,152.80 and 121,730.60 is: 182,570.95
Step by Step Solution
- Step 1: Write the proportion equation
321,479.12 : 482,152.80 = 121,730.60 : x - Step 2: Convert to fraction form
321,479.12/482,152.80 = 121,730.60/x - Step 3: Cross multiply
321,479.12x = 482,152.80 × 121,730.60 - Step 4: Simplify right side
321,479.12x = 58,692,749,635.68 - Step 5: Solve for x
x = 58,692,749,635.68/321,479.12 - Step 6: Final answer
x = 182,570.95
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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.