Finding the Fourth Proportional to 239,417.20, 358,434.60 and 146,105.20
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Solution
The fourth proportional to 239,417.20, 358,434.60 and 146,105.20 is: 218,735.99
Step by Step Solution
- Step 1: Write the proportion equation
239,417.20 : 358,434.60 = 146,105.20 : x - Step 2: Convert to fraction form
239,417.20/358,434.60 = 146,105.20/x - Step 3: Cross multiply
239,417.20x = 358,434.60 × 146,105.20 - Step 4: Simplify right side
239,417.20x = 52,369,158,919.92 - Step 5: Solve for x
x = 52,369,158,919.92/239,417.20 - Step 6: Final answer
x = 218,735.99
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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.