Finding the Fourth Proportional to 261,605.70, 392,408.55 and 84,130.65
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Solution
The fourth proportional to 261,605.70, 392,408.55 and 84,130.65 is: 126,195.98
Step by Step Solution
- Step 1: Write the proportion equation
261,605.70 : 392,408.55 = 84,130.65 : x - Step 2: Convert to fraction form
261,605.70/392,408.55 = 84,130.65/x - Step 3: Cross multiply
261,605.70x = 392,408.55 × 84,130.65 - Step 4: Simplify right side
261,605.70x = 33,013,586,377.06 - Step 5: Solve for x
x = 33,013,586,377.06/261,605.70 - Step 6: Final answer
x = 126,195.98
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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.