Finding the Fourth Proportional to 251,935.34, 347,670.77 and 138,758.09
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Solution
The fourth proportional to 251,935.34, 347,670.77 and 138,758.09 is: 191,486.17
Step by Step Solution
- Step 1: Write the proportion equation
251,935.34 : 347,670.77 = 138,758.09 : x - Step 2: Convert to fraction form
251,935.34/347,670.77 = 138,758.09/x - Step 3: Cross multiply
251,935.34x = 347,670.77 × 138,758.09 - Step 4: Simplify right side
251,935.34x = 48,242,133,470.27 - Step 5: Solve for x
x = 48,242,133,470.27/251,935.34 - Step 6: Final answer
x = 191,486.17
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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.