Finding the Fourth Proportional to 259,603.20, 389,404.80 and 207,115.20
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Solution
The fourth proportional to 259,603.20, 389,404.80 and 207,115.20 is: 310,672.80
Step by Step Solution
- Step 1: Write the proportion equation
259,603.20 : 389,404.80 = 207,115.20 : x - Step 2: Convert to fraction form
259,603.20/389,404.80 = 207,115.20/x - Step 3: Cross multiply
259,603.20x = 389,404.80 × 207,115.20 - Step 4: Simplify right side
259,603.20x = 80,651,653,032.96 - Step 5: Solve for x
x = 80,651,653,032.96/259,603.20 - Step 6: Final answer
x = 310,672.80
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1.5x scale
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.