Finding the Fourth Proportional to 320,497.70, 480,817.62 and 120,819.80
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Solution
The fourth proportional to 320,497.70, 480,817.62 and 120,819.80 is: 181,256.50
Step by Step Solution
- Step 1: Write the proportion equation
320,497.70 : 480,817.62 = 120,819.80 : x - Step 2: Convert to fraction form
320,497.70/480,817.62 = 120,819.80/x - Step 3: Cross multiply
320,497.70x = 480,817.62 × 120,819.80 - Step 4: Simplify right side
320,497.70x = 58,092,289,886.92 - Step 5: Solve for x
x = 58,092,289,886.92/320,497.70 - Step 6: Final answer
x = 181,256.50
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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.