Finding the Fourth Proportional to 210,787.11, 290,880.18 and 115,291.71
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Solution
The fourth proportional to 210,787.11, 290,880.18 and 115,291.71 is: 159,099.26
Step by Step Solution
- Step 1: Write the proportion equation
210,787.11 : 290,880.18 = 115,291.71 : x - Step 2: Convert to fraction form
210,787.11/290,880.18 = 115,291.71/x - Step 3: Cross multiply
210,787.11x = 290,880.18 × 115,291.71 - Step 4: Simplify right side
210,787.11x = 33,536,073,357.31 - Step 5: Solve for x
x = 33,536,073,357.31/210,787.11 - Step 6: Final answer
x = 159,099.26
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.