Finding the Fourth Proportional to 286,421.76, 395,198.40 and 173,242.08
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Solution
The fourth proportional to 286,421.76, 395,198.40 and 173,242.08 is: 239,035.58
Step by Step Solution
- Step 1: Write the proportion equation
286,421.76 : 395,198.40 = 173,242.08 : x - Step 2: Convert to fraction form
286,421.76/395,198.40 = 173,242.08/x - Step 3: Cross multiply
286,421.76x = 395,198.40 × 173,242.08 - Step 4: Simplify right side
286,421.76x = 68,464,992,828.67 - Step 5: Solve for x
x = 68,464,992,828.67/286,421.76 - Step 6: Final answer
x = 239,035.58
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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.