Finding the Fourth Proportional to 407,717.40, 611,576.10 and 239,318.40
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Solution
The fourth proportional to 407,717.40, 611,576.10 and 239,318.40 is: 358,977.60
Step by Step Solution
- Step 1: Write the proportion equation
407,717.40 : 611,576.10 = 239,318.40 : x - Step 2: Convert to fraction form
407,717.40/611,576.10 = 239,318.40/x - Step 3: Cross multiply
407,717.40x = 611,576.10 × 239,318.40 - Step 4: Simplify right side
407,717.40x = 146,361,413,730.24 - Step 5: Solve for x
x = 146,361,413,730.24/407,717.40 - Step 6: Final answer
x = 358,977.60
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1.5x scale
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.