Finding the Fourth Proportional to 312,670.80, 431,487.77 and 169,432.02
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Solution
The fourth proportional to 312,670.80, 431,487.77 and 169,432.02 is: 233,817.30
Step by Step Solution
- Step 1: Write the proportion equation
312,670.80 : 431,487.77 = 169,432.02 : x - Step 2: Convert to fraction form
312,670.80/431,487.77 = 169,432.02/x - Step 3: Cross multiply
312,670.80x = 431,487.77 × 169,432.02 - Step 4: Simplify right side
312,670.80x = 73,107,843,629.24 - Step 5: Solve for x
x = 73,107,843,629.24/312,670.80 - Step 6: Final answer
x = 233,817.30
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.