Finding the Fourth Proportional to 339,378.05, 509,177.80 and 161,862.01
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Solution
The fourth proportional to 339,378.05, 509,177.80 and 161,862.01 is: 242,845.82
Step by Step Solution
- Step 1: Write the proportion equation
339,378.05 : 509,177.80 = 161,862.01 : x - Step 2: Convert to fraction form
339,378.05/509,177.80 = 161,862.01/x - Step 3: Cross multiply
339,378.05x = 509,177.80 × 161,862.01 - Step 4: Simplify right side
339,378.05x = 82,416,542,155.38 - Step 5: Solve for x
x = 82,416,542,155.38/339,378.05 - Step 6: Final answer
x = 242,845.82
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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.