Finding the Fourth Proportional to 231,405.68, 319,281.36 and 135,893.72
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Solution
The fourth proportional to 231,405.68, 319,281.36 and 135,893.72 is: 187,498.99
Step by Step Solution
- Step 1: Write the proportion equation
231,405.68 : 319,281.36 = 135,893.72 : x - Step 2: Convert to fraction form
231,405.68/319,281.36 = 135,893.72/x - Step 3: Cross multiply
231,405.68x = 319,281.36 × 135,893.72 - Step 4: Simplify right side
231,405.68x = 43,388,331,737.06 - Step 5: Solve for x
x = 43,388,331,737.06/231,405.68 - Step 6: Final answer
x = 187,498.99
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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.