Finding the Fourth Proportional to 312,972.68, 469,341.14 and 113,243.68
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Solution
The fourth proportional to 312,972.68, 469,341.14 and 113,243.68 is: 169,822.87
Step by Step Solution
- Step 1: Write the proportion equation
312,972.68 : 469,341.14 = 113,243.68 : x - Step 2: Convert to fraction form
312,972.68/469,341.14 = 113,243.68/x - Step 3: Cross multiply
312,972.68x = 469,341.14 × 113,243.68 - Step 4: Simplify right side
312,972.68x = 53,149,917,869.00 - Step 5: Solve for x
x = 53,149,917,869.00/312,972.68 - Step 6: Final answer
x = 169,822.87
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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.