Finding the Fourth Proportional to 425,987.28, 638,349.84 and 172,960.08
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Solution
The fourth proportional to 425,987.28, 638,349.84 and 172,960.08 is: 259,183.89
Step by Step Solution
- Step 1: Write the proportion equation
425,987.28 : 638,349.84 = 172,960.08 : x - Step 2: Convert to fraction form
425,987.28/638,349.84 = 172,960.08/x - Step 3: Cross multiply
425,987.28x = 638,349.84 × 172,960.08 - Step 4: Simplify right side
425,987.28x = 110,409,039,394.39 - Step 5: Solve for x
x = 110,409,039,394.39/425,987.28 - Step 6: Final answer
x = 259,183.89
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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.