Finding the Fourth Proportional to 285,501.70, 428,252.55 and 259,257.70
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Solution
The fourth proportional to 285,501.70, 428,252.55 and 259,257.70 is: 388,886.55
Step by Step Solution
- Step 1: Write the proportion equation
285,501.70 : 428,252.55 = 259,257.70 : x - Step 2: Convert to fraction form
285,501.70/428,252.55 = 259,257.70/x - Step 3: Cross multiply
285,501.70x = 428,252.55 × 259,257.70 - Step 4: Simplify right side
285,501.70x = 111,027,771,132.14 - Step 5: Solve for x
x = 111,027,771,132.14/285,501.70 - Step 6: Final answer
x = 388,886.55
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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.