Finding the Fourth Proportional to 218,754.74, 328,159.48 and 85,617.74
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Solution
The fourth proportional to 218,754.74, 328,159.48 and 85,617.74 is: 128,437.32
Step by Step Solution
- Step 1: Write the proportion equation
218,754.74 : 328,159.48 = 85,617.74 : x - Step 2: Convert to fraction form
218,754.74/328,159.48 = 85,617.74/x - Step 3: Cross multiply
218,754.74x = 328,159.48 × 85,617.74 - Step 4: Simplify right side
218,754.74x = 28,096,273,037.18 - Step 5: Solve for x
x = 28,096,273,037.18/218,754.74 - Step 6: Final answer
x = 128,437.32
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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.