Finding the Fourth Proportional to 305,397.21, 421,498.73 and 169,474.81
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Solution
The fourth proportional to 305,397.21, 421,498.73 and 169,474.81 is: 233,903.31
Step by Step Solution
- Step 1: Write the proportion equation
305,397.21 : 421,498.73 = 169,474.81 : x - Step 2: Convert to fraction form
305,397.21/421,498.73 = 169,474.81/x - Step 3: Cross multiply
305,397.21x = 421,498.73 × 169,474.81 - Step 4: Simplify right side
305,397.21x = 71,433,417,285.18 - Step 5: Solve for x
x = 71,433,417,285.18/305,397.21 - Step 6: Final answer
x = 233,903.31
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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.