Finding the Fourth Proportional to 221,432.18, 305,471.17 and 130,727.39
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Solution
The fourth proportional to 221,432.18, 305,471.17 and 130,727.39 is: 180,341.66
Step by Step Solution
- Step 1: Write the proportion equation
221,432.18 : 305,471.17 = 130,727.39 : x - Step 2: Convert to fraction form
221,432.18/305,471.17 = 130,727.39/x - Step 3: Cross multiply
221,432.18x = 305,471.17 × 130,727.39 - Step 4: Simplify right side
221,432.18x = 39,933,446,920.17 - Step 5: Solve for x
x = 39,933,446,920.17/221,432.18 - Step 6: Final answer
x = 180,341.66
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1.5x scale
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.