Finding the Fourth Proportional to 285,842.11, 394,459.42 and 156,777.95
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Solution
The fourth proportional to 285,842.11, 394,459.42 and 156,777.95 is: 216,352.09
Step by Step Solution
- Step 1: Write the proportion equation
285,842.11 : 394,459.42 = 156,777.95 : x - Step 2: Convert to fraction form
285,842.11/394,459.42 = 156,777.95/x - Step 3: Cross multiply
285,842.11x = 394,459.42 × 156,777.95 - Step 4: Simplify right side
285,842.11x = 61,842,539,225.79 - Step 5: Solve for x
x = 61,842,539,225.79/285,842.11 - Step 6: Final answer
x = 216,352.09
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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.