Finding the Fourth Proportional to 218,972.20, 328,430.06 and 69,227.70
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Solution
The fourth proportional to 218,972.20, 328,430.06 and 69,227.70 is: 103,832.62
Step by Step Solution
- Step 1: Write the proportion equation
218,972.20 : 328,430.06 = 69,227.70 : x - Step 2: Convert to fraction form
218,972.20/328,430.06 = 69,227.70/x - Step 3: Cross multiply
218,972.20x = 328,430.06 × 69,227.70 - Step 4: Simplify right side
218,972.20x = 22,736,457,664.66 - Step 5: Solve for x
x = 22,736,457,664.66/218,972.20 - Step 6: Final answer
x = 103,832.62
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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.