Finding the Fourth Proportional to 509,787.70, 764,764.18 and 168,129.09
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Solution
The fourth proportional to 509,787.70, 764,764.18 and 168,129.09 is: 252,220.89
Step by Step Solution
- Step 1: Write the proportion equation
509,787.70 : 764,764.18 = 168,129.09 : x - Step 2: Convert to fraction form
509,787.70/764,764.18 = 168,129.09/x - Step 3: Cross multiply
509,787.70x = 764,764.18 × 168,129.09 - Step 4: Simplify right side
509,787.70x = 128,579,105,227.67 - Step 5: Solve for x
x = 128,579,105,227.67/509,787.70 - Step 6: Final answer
x = 252,220.89
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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.