Finding the Fourth Proportional to 251,935.78, 347,655.43 and 138,758.53
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Solution
The fourth proportional to 251,935.78, 347,655.43 and 138,758.53 is: 191,477.99
Step by Step Solution
- Step 1: Write the proportion equation
251,935.78 : 347,655.43 = 138,758.53 : x - Step 2: Convert to fraction form
251,935.78/347,655.43 = 138,758.53/x - Step 3: Cross multiply
251,935.78x = 347,655.43 × 138,758.53 - Step 4: Simplify right side
251,935.78x = 48,240,156,413.32 - Step 5: Solve for x
x = 48,240,156,413.32/251,935.78 - Step 6: Final answer
x = 191,477.99
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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.