Finding the Fourth Proportional to 252,301.69, 348,178.94 and 139,128.49
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Solution
The fourth proportional to 252,301.69, 348,178.94 and 139,128.49 is: 191,998.75
Step by Step Solution
- Step 1: Write the proportion equation
252,301.69 : 348,178.94 = 139,128.49 : x - Step 2: Convert to fraction form
252,301.69/348,178.94 = 139,128.49/x - Step 3: Cross multiply
252,301.69x = 348,178.94 × 139,128.49 - Step 4: Simplify right side
252,301.69x = 48,441,610,172.00 - Step 5: Solve for x
x = 48,441,610,172.00/252,301.69 - Step 6: Final answer
x = 191,998.75
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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.