Finding the Fourth Proportional to 207,278.70, 310,918.06 and 143,965.06
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Solution
The fourth proportional to 207,278.70, 310,918.06 and 143,965.06 is: 215,947.60
Step by Step Solution
- Step 1: Write the proportion equation
207,278.70 : 310,918.06 = 143,965.06 : x - Step 2: Convert to fraction form
207,278.70/310,918.06 = 143,965.06/x - Step 3: Cross multiply
207,278.70x = 310,918.06 × 143,965.06 - Step 4: Simplify right side
207,278.70x = 44,761,337,162.98 - Step 5: Solve for x
x = 44,761,337,162.98/207,278.70 - Step 6: Final answer
x = 215,947.60
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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.