Finding the Fourth Proportional to 280,257.87, 386,772.58 and 212,166.99
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Solution
The fourth proportional to 280,257.87, 386,772.58 and 212,166.99 is: 292,803.10
Step by Step Solution
- Step 1: Write the proportion equation
280,257.87 : 386,772.58 = 212,166.99 : x - Step 2: Convert to fraction form
280,257.87/386,772.58 = 212,166.99/x - Step 3: Cross multiply
280,257.87x = 386,772.58 × 212,166.99 - Step 4: Simplify right side
280,257.87x = 82,060,373,052.30 - Step 5: Solve for x
x = 82,060,373,052.30/280,257.87 - Step 6: Final answer
x = 292,803.10
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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.