Finding the Fourth Proportional to 306,485.75, 459,728.63 and 84,869.75
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Solution
The fourth proportional to 306,485.75, 459,728.63 and 84,869.75 is: 127,304.63
Step by Step Solution
- Step 1: Write the proportion equation
306,485.75 : 459,728.63 = 84,869.75 : x - Step 2: Convert to fraction form
306,485.75/459,728.63 = 84,869.75/x - Step 3: Cross multiply
306,485.75x = 459,728.63 × 84,869.75 - Step 4: Simplify right side
306,485.75x = 39,017,053,895.94 - Step 5: Solve for x
x = 39,017,053,895.94/306,485.75 - Step 6: Final answer
x = 127,304.63
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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.