Finding the Fourth Proportional to 424,153.81, 636,214.09 and 143,671.05
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Solution
The fourth proportional to 424,153.81, 636,214.09 and 143,671.05 is: 215,500.94
Step by Step Solution
- Step 1: Write the proportion equation
424,153.81 : 636,214.09 = 143,671.05 : x - Step 2: Convert to fraction form
424,153.81/636,214.09 = 143,671.05/x - Step 3: Cross multiply
424,153.81x = 636,214.09 × 143,671.05 - Step 4: Simplify right side
424,153.81x = 91,405,546,335.09 - Step 5: Solve for x
x = 91,405,546,335.09/424,153.81 - Step 6: Final answer
x = 215,500.94
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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.