Finding the Fourth Proportional to 287,434.81, 431,132.17 and 107,486.02
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Solution
The fourth proportional to 287,434.81, 431,132.17 and 107,486.02 is: 161,221.53
Step by Step Solution
- Step 1: Write the proportion equation
287,434.81 : 431,132.17 = 107,486.02 : x - Step 2: Convert to fraction form
287,434.81/431,132.17 = 107,486.02/x - Step 3: Cross multiply
287,434.81x = 431,132.17 × 107,486.02 - Step 4: Simplify right side
287,434.81x = 46,340,681,047.26 - Step 5: Solve for x
x = 46,340,681,047.26/287,434.81 - Step 6: Final answer
x = 161,221.53
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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.