Finding the Fourth Proportional to 200,015.70, 300,023.55 and 121,283.70
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Solution
The fourth proportional to 200,015.70, 300,023.55 and 121,283.70 is: 181,925.55
Step by Step Solution
- Step 1: Write the proportion equation
200,015.70 : 300,023.55 = 121,283.70 : x - Step 2: Convert to fraction form
200,015.70/300,023.55 = 121,283.70/x - Step 3: Cross multiply
200,015.70x = 300,023.55 × 121,283.70 - Step 4: Simplify right side
200,015.70x = 36,387,966,231.14 - Step 5: Solve for x
x = 36,387,966,231.14/200,015.70 - Step 6: Final answer
x = 181,925.55
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1.5x scale
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.