Finding the Fourth Proportional to 312,605.20, 431,394.60 and 169,368.88
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Solution
The fourth proportional to 312,605.20, 431,394.60 and 169,368.88 is: 233,728.74
Step by Step Solution
- Step 1: Write the proportion equation
312,605.20 : 431,394.60 = 169,368.88 : x - Step 2: Convert to fraction form
312,605.20/431,394.60 = 169,368.88/x - Step 3: Cross multiply
312,605.20x = 431,394.60 × 169,368.88 - Step 4: Simplify right side
312,605.20x = 73,064,820,240.05 - Step 5: Solve for x
x = 73,064,820,240.05/312,605.20 - Step 6: Final answer
x = 233,728.74
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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.