Finding the Fourth Proportional to 320,089.62, 479,974.46 and 106,783.28
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Solution
The fourth proportional to 320,089.62, 479,974.46 and 106,783.28 is: 160,121.55
Step by Step Solution
- Step 1: Write the proportion equation
320,089.62 : 479,974.46 = 106,783.28 : x - Step 2: Convert to fraction form
320,089.62/479,974.46 = 106,783.28/x - Step 3: Cross multiply
320,089.62x = 479,974.46 × 106,783.28 - Step 4: Simplify right side
320,089.62x = 51,253,247,155.03 - Step 5: Solve for x
x = 51,253,247,155.03/320,089.62 - Step 6: Final answer
x = 160,121.55
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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.