Finding the Fourth Proportional to 245,647.14, 338,999.68 and 138,220.99
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Solution
The fourth proportional to 245,647.14, 338,999.68 and 138,220.99 is: 190,748.69
Step by Step Solution
- Step 1: Write the proportion equation
245,647.14 : 338,999.68 = 138,220.99 : x - Step 2: Convert to fraction form
245,647.14/338,999.68 = 138,220.99/x - Step 3: Cross multiply
245,647.14x = 338,999.68 × 138,220.99 - Step 4: Simplify right side
245,647.14x = 46,856,869,840.68 - Step 5: Solve for x
x = 46,856,869,840.68/245,647.14 - Step 6: Final answer
x = 190,748.69
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1.5x scale
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.