Finding the Fourth Proportional to 403,378.20, 605,067.30 and 291,403.80
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Solution
The fourth proportional to 403,378.20, 605,067.30 and 291,403.80 is: 437,105.70
Step by Step Solution
- Step 1: Write the proportion equation
403,378.20 : 605,067.30 = 291,403.80 : x - Step 2: Convert to fraction form
403,378.20/605,067.30 = 291,403.80/x - Step 3: Cross multiply
403,378.20x = 605,067.30 × 291,403.80 - Step 4: Simplify right side
403,378.20x = 176,318,910,475.74 - Step 5: Solve for x
x = 176,318,910,475.74/403,378.20 - Step 6: Final answer
x = 437,105.70
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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.