Finding the Fourth Proportional to 307,220.63, 460,908.70 and 85,604.63
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Solution
The fourth proportional to 307,220.63, 460,908.70 and 85,604.63 is: 128,428.60
Step by Step Solution
- Step 1: Write the proportion equation
307,220.63 : 460,908.70 = 85,604.63 : x - Step 2: Convert to fraction form
307,220.63/460,908.70 = 85,604.63/x - Step 3: Cross multiply
307,220.63x = 460,908.70 × 85,604.63 - Step 4: Simplify right side
307,220.63x = 39,455,916,208.73 - Step 5: Solve for x
x = 39,455,916,208.73/307,220.63 - Step 6: Final answer
x = 128,428.60
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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.