Finding the Fourth Proportional to 320,220.74, 480,497.26 and 142,686.46
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Solution
The fourth proportional to 320,220.74, 480,497.26 and 142,686.46 is: 214,103.72
Step by Step Solution
- Step 1: Write the proportion equation
320,220.74 : 480,497.26 = 142,686.46 : x - Step 2: Convert to fraction form
320,220.74/480,497.26 = 142,686.46/x - Step 3: Cross multiply
320,220.74x = 480,497.26 × 142,686.46 - Step 4: Simplify right side
320,220.74x = 68,560,451,511.14 - Step 5: Solve for x
x = 68,560,451,511.14/320,220.74 - Step 6: Final answer
x = 214,103.72
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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.