Finding the Fourth Proportional to 276,905.85, 415,352.80 and 77,220.91
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Solution
The fourth proportional to 276,905.85, 415,352.80 and 77,220.91 is: 115,829.70
Step by Step Solution
- Step 1: Write the proportion equation
276,905.85 : 415,352.80 = 77,220.91 : x - Step 2: Convert to fraction form
276,905.85/415,352.80 = 77,220.91/x - Step 3: Cross multiply
276,905.85x = 415,352.80 × 77,220.91 - Step 4: Simplify right side
276,905.85x = 32,073,921,187.05 - Step 5: Solve for x
x = 32,073,921,187.05/276,905.85 - Step 6: Final answer
x = 115,829.70
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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.