Finding the Fourth Proportional to 280,655.20, 420,688.74 and 130,771.92
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Solution
The fourth proportional to 280,655.20, 420,688.74 and 130,771.92 is: 196,020.86
Step by Step Solution
- Step 1: Write the proportion equation
280,655.20 : 420,688.74 = 130,771.92 : x - Step 2: Convert to fraction form
280,655.20/420,688.74 = 130,771.92/x - Step 3: Cross multiply
280,655.20x = 420,688.74 × 130,771.92 - Step 4: Simplify right side
280,655.20x = 55,014,274,252.18 - Step 5: Solve for x
x = 55,014,274,252.18/280,655.20 - Step 6: Final answer
x = 196,020.86
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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.