Finding the Fourth Proportional to 312,785.11, 431,643.02 and 169,545.12
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Solution
The fourth proportional to 312,785.11, 431,643.02 and 169,545.12 is: 233,972.03
Step by Step Solution
- Step 1: Write the proportion equation
312,785.11 : 431,643.02 = 169,545.12 : x - Step 2: Convert to fraction form
312,785.11/431,643.02 = 169,545.12/x - Step 3: Cross multiply
312,785.11x = 431,643.02 × 169,545.12 - Step 4: Simplify right side
312,785.11x = 73,182,967,623.06 - Step 5: Solve for x
x = 73,182,967,623.06/312,785.11 - Step 6: Final answer
x = 233,972.03
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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.