Finding the Fourth Proportional to 306,537.20, 459,805.80 and 84,921.20
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Solution
The fourth proportional to 306,537.20, 459,805.80 and 84,921.20 is: 127,381.80
Step by Step Solution
- Step 1: Write the proportion equation
306,537.20 : 459,805.80 = 84,921.20 : x - Step 2: Convert to fraction form
306,537.20/459,805.80 = 84,921.20/x - Step 3: Cross multiply
306,537.20x = 459,805.80 × 84,921.20 - Step 4: Simplify right side
306,537.20x = 39,047,260,302.96 - Step 5: Solve for x
x = 39,047,260,302.96/306,537.20 - Step 6: Final answer
x = 127,381.80
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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.