Finding the Fourth Proportional to 205,862.70, 308,794.05 and 121,663.20
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Solution
The fourth proportional to 205,862.70, 308,794.05 and 121,663.20 is: 182,494.80
Step by Step Solution
- Step 1: Write the proportion equation
205,862.70 : 308,794.05 = 121,663.20 : x - Step 2: Convert to fraction form
205,862.70/308,794.05 = 121,663.20/x - Step 3: Cross multiply
205,862.70x = 308,794.05 × 121,663.20 - Step 4: Simplify right side
205,862.70x = 37,568,872,263.96 - Step 5: Solve for x
x = 37,568,872,263.96/205,862.70 - Step 6: Final answer
x = 182,494.80
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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.