Finding the Fourth Proportional to 428,173.98, 643,245.48 and 302,104.74
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Solution
The fourth proportional to 428,173.98, 643,245.48 and 302,104.74 is: 453,851.75
Step by Step Solution
- Step 1: Write the proportion equation
428,173.98 : 643,245.48 = 302,104.74 : x - Step 2: Convert to fraction form
428,173.98/643,245.48 = 302,104.74/x - Step 3: Cross multiply
428,173.98x = 643,245.48 × 302,104.74 - Step 4: Simplify right side
428,173.98x = 194,327,508,491.58 - Step 5: Solve for x
x = 194,327,508,491.58/428,173.98 - Step 6: Final answer
x = 453,851.75
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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.