Finding the Fourth Proportional to 212,963.59, 319,806.94 and 142,340.06
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Solution
The fourth proportional to 212,963.59, 319,806.94 and 142,340.06 is: 213,751.75
Step by Step Solution
- Step 1: Write the proportion equation
212,963.59 : 319,806.94 = 142,340.06 : x - Step 2: Convert to fraction form
212,963.59/319,806.94 = 142,340.06/x - Step 3: Cross multiply
212,963.59x = 319,806.94 × 142,340.06 - Step 4: Simplify right side
212,963.59x = 45,521,338,438.78 - Step 5: Solve for x
x = 45,521,338,438.78/212,963.59 - Step 6: Final answer
x = 213,751.75
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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.