Finding the Fourth Proportional to 286,888.67, 395,890.72 and 157,806.31
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Solution
The fourth proportional to 286,888.67, 395,890.72 and 157,806.31 is: 217,764.11
Step by Step Solution
- Step 1: Write the proportion equation
286,888.67 : 395,890.72 = 157,806.31 : x - Step 2: Convert to fraction form
286,888.67/395,890.72 = 157,806.31/x - Step 3: Cross multiply
286,888.67x = 395,890.72 × 157,806.31 - Step 4: Simplify right side
286,888.67x = 62,474,055,269.45 - Step 5: Solve for x
x = 62,474,055,269.45/286,888.67 - Step 6: Final answer
x = 217,764.11
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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.