Finding the Fourth Proportional to 287,435.81, 431,133.67 and 107,487.02
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Solution
The fourth proportional to 287,435.81, 431,133.67 and 107,487.02 is: 161,223.03
Step by Step Solution
- Step 1: Write the proportion equation
287,435.81 : 431,133.67 = 107,487.02 : x - Step 2: Convert to fraction form
287,435.81/431,133.67 = 107,487.02/x - Step 3: Cross multiply
287,435.81x = 431,133.67 × 107,487.02 - Step 4: Simplify right side
287,435.81x = 46,341,273,409.96 - Step 5: Solve for x
x = 46,341,273,409.96/287,435.81 - Step 6: Final answer
x = 161,223.03
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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.