Finding the Fourth Proportional to 320,072.58, 480,180.30 and 120,394.62
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Solution
The fourth proportional to 320,072.58, 480,180.30 and 120,394.62 is: 180,618.80
Step by Step Solution
- Step 1: Write the proportion equation
320,072.58 : 480,180.30 = 120,394.62 : x - Step 2: Convert to fraction form
320,072.58/480,180.30 = 120,394.62/x - Step 3: Cross multiply
320,072.58x = 480,180.30 × 120,394.62 - Step 4: Simplify right side
320,072.58x = 57,811,124,749.99 - Step 5: Solve for x
x = 57,811,124,749.99/320,072.58 - Step 6: Final answer
x = 180,618.80
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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.