Finding the Fourth Proportional to 639,220.86, 958,581.99 and 239,643.54
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Solution
The fourth proportional to 639,220.86, 958,581.99 and 239,643.54 is: 359,371.85
Step by Step Solution
- Step 1: Write the proportion equation
639,220.86 : 958,581.99 = 239,643.54 : x - Step 2: Convert to fraction form
639,220.86/958,581.99 = 239,643.54/x - Step 3: Cross multiply
639,220.86x = 958,581.99 × 239,643.54 - Step 4: Simplify right side
639,220.86x = 229,717,981,463.85 - Step 5: Solve for x
x = 229,717,981,463.85/639,220.86 - Step 6: Final answer
x = 359,371.85
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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.