Finding the Fourth Proportional to 320,431.80, 480,647.70 and 304,879.80
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Solution
The fourth proportional to 320,431.80, 480,647.70 and 304,879.80 is: 457,319.70
Step by Step Solution
- Step 1: Write the proportion equation
320,431.80 : 480,647.70 = 304,879.80 : x - Step 2: Convert to fraction form
320,431.80/480,647.70 = 304,879.80/x - Step 3: Cross multiply
320,431.80x = 480,647.70 × 304,879.80 - Step 4: Simplify right side
320,431.80x = 146,539,774,646.46 - Step 5: Solve for x
x = 146,539,774,646.46/320,431.80 - Step 6: Final answer
x = 457,319.70
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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.