Finding the Fourth Proportional to 305,765.80, 458,648.70 and 81,125.80
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Solution
The fourth proportional to 305,765.80, 458,648.70 and 81,125.80 is: 121,688.70
Step by Step Solution
- Step 1: Write the proportion equation
305,765.80 : 458,648.70 = 81,125.80 : x - Step 2: Convert to fraction form
305,765.80/458,648.70 = 81,125.80/x - Step 3: Cross multiply
305,765.80x = 458,648.70 × 81,125.80 - Step 4: Simplify right side
305,765.80x = 37,208,242,706.46 - Step 5: Solve for x
x = 37,208,242,706.46/305,765.80 - Step 6: Final answer
x = 121,688.70
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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.