Finding the Fourth Proportional to 521,205.26, 719,139.21 and 317,253.74
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Solution
The fourth proportional to 521,205.26, 719,139.21 and 317,253.74 is: 437,734.65
Step by Step Solution
- Step 1: Write the proportion equation
521,205.26 : 719,139.21 = 317,253.74 : x - Step 2: Convert to fraction form
521,205.26/719,139.21 = 317,253.74/x - Step 3: Cross multiply
521,205.26x = 719,139.21 × 317,253.74 - Step 4: Simplify right side
521,205.26x = 228,149,603,953.15 - Step 5: Solve for x
x = 228,149,603,953.15/521,205.26 - Step 6: Final answer
x = 437,734.65
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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.