Finding the Fourth Proportional to 221,953.21, 306,314.19 and 135,911.77
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Solution
The fourth proportional to 221,953.21, 306,314.19 and 135,911.77 is: 187,569.73
Step by Step Solution
- Step 1: Write the proportion equation
221,953.21 : 306,314.19 = 135,911.77 : x - Step 2: Convert to fraction form
221,953.21/306,314.19 = 135,911.77/x - Step 3: Cross multiply
221,953.21x = 306,314.19 × 135,911.77 - Step 4: Simplify right side
221,953.21x = 41,631,702,973.23 - Step 5: Solve for x
x = 41,631,702,973.23/221,953.21 - Step 6: Final answer
x = 187,569.73
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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.