Finding the Fourth Proportional to 230,703.67, 318,371.84 and 128,727.28
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Solution
The fourth proportional to 230,703.67, 318,371.84 and 128,727.28 is: 177,644.08
Step by Step Solution
- Step 1: Write the proportion equation
230,703.67 : 318,371.84 = 128,727.28 : x - Step 2: Convert to fraction form
230,703.67/318,371.84 = 128,727.28/x - Step 3: Cross multiply
230,703.67x = 318,371.84 × 128,727.28 - Step 4: Simplify right side
230,703.67x = 40,983,139,800.05 - Step 5: Solve for x
x = 40,983,139,800.05/230,703.67 - Step 6: Final answer
x = 177,644.08
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.