Finding the Fourth Proportional to 245,135.88, 338,287.71 and 137,705.99
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Solution
The fourth proportional to 245,135.88, 338,287.71 and 137,705.99 is: 190,034.37
Step by Step Solution
- Step 1: Write the proportion equation
245,135.88 : 338,287.71 = 137,705.99 : x - Step 2: Convert to fraction form
245,135.88/338,287.71 = 137,705.99/x - Step 3: Cross multiply
245,135.88x = 338,287.71 × 137,705.99 - Step 4: Simplify right side
245,135.88x = 46,584,242,835.34 - Step 5: Solve for x
x = 46,584,242,835.34/245,135.88 - Step 6: Final answer
x = 190,034.37
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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.