Finding the Fourth Proportional to 312,989.92, 469,489.74 and 76,337.08
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Solution
The fourth proportional to 312,989.92, 469,489.74 and 76,337.08 is: 114,506.81
Step by Step Solution
- Step 1: Write the proportion equation
312,989.92 : 469,489.74 = 76,337.08 : x - Step 2: Convert to fraction form
312,989.92/469,489.74 = 76,337.08/x - Step 3: Cross multiply
312,989.92x = 469,489.74 × 76,337.08 - Step 4: Simplify right side
312,989.92x = 35,839,475,841.56 - Step 5: Solve for x
x = 35,839,475,841.56/312,989.92 - Step 6: Final answer
x = 114,506.81
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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.