Finding the Fourth Proportional to 218,795.19, 328,251.12 and 78,555.03
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Solution
The fourth proportional to 218,795.19, 328,251.12 and 78,555.03 is: 117,853.49
Step by Step Solution
- Step 1: Write the proportion equation
218,795.19 : 328,251.12 = 78,555.03 : x - Step 2: Convert to fraction form
218,795.19/328,251.12 = 78,555.03/x - Step 3: Cross multiply
218,795.19x = 328,251.12 × 78,555.03 - Step 4: Simplify right side
218,795.19x = 25,785,776,579.13 - Step 5: Solve for x
x = 25,785,776,579.13/218,795.19 - Step 6: Final answer
x = 117,853.49
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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.