Finding the Fourth Proportional to 413,722.40, 620,691.60 and 133,246.40
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Solution
The fourth proportional to 413,722.40, 620,691.60 and 133,246.40 is: 199,904.38
Step by Step Solution
- Step 1: Write the proportion equation
413,722.40 : 620,691.60 = 133,246.40 : x - Step 2: Convert to fraction form
413,722.40/620,691.60 = 133,246.40/x - Step 3: Cross multiply
413,722.40x = 620,691.60 × 133,246.40 - Step 4: Simplify right side
413,722.40x = 82,704,921,210.24 - Step 5: Solve for x
x = 82,704,921,210.24/413,722.40 - Step 6: Final answer
x = 199,904.38
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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.