Finding the Fourth Proportional to 286,731.20, 395,686.68 and 159,405.68
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Solution
The fourth proportional to 286,731.20, 395,686.68 and 159,405.68 is: 219,978.52
Step by Step Solution
- Step 1: Write the proportion equation
286,731.20 : 395,686.68 = 159,405.68 : x - Step 2: Convert to fraction form
286,731.20/395,686.68 = 159,405.68/x - Step 3: Cross multiply
286,731.20x = 395,686.68 × 159,405.68 - Step 4: Simplify right side
286,731.20x = 63,074,704,292.34 - Step 5: Solve for x
x = 63,074,704,292.34/286,731.20 - Step 6: Final answer
x = 219,978.52
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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.