Finding the Fourth Proportional to 331,943.94, 497,916.05 and 142,281.09
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Solution
The fourth proportional to 331,943.94, 497,916.05 and 142,281.09 is: 213,421.69
Step by Step Solution
- Step 1: Write the proportion equation
331,943.94 : 497,916.05 = 142,281.09 : x - Step 2: Convert to fraction form
331,943.94/497,916.05 = 142,281.09/x - Step 3: Cross multiply
331,943.94x = 497,916.05 × 142,281.09 - Step 4: Simplify right side
331,943.94x = 70,844,037,611.09 - Step 5: Solve for x
x = 70,844,037,611.09/331,943.94 - Step 6: Final answer
x = 213,421.69
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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.