Finding the Fourth Proportional to 286,733.20, 395,689.44 and 159,407.68
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Solution
The fourth proportional to 286,733.20, 395,689.44 and 159,407.68 is: 219,981.28
Step by Step Solution
- Step 1: Write the proportion equation
286,733.20 : 395,689.44 = 159,407.68 : x - Step 2: Convert to fraction form
286,733.20/395,689.44 = 159,407.68/x - Step 3: Cross multiply
286,733.20x = 395,689.44 × 159,407.68 - Step 4: Simplify right side
286,733.20x = 63,075,935,630.90 - Step 5: Solve for x
x = 63,075,935,630.90/286,733.20 - Step 6: Final answer
x = 219,981.28
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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.