Finding the Fourth Proportional to 421,178.56, 581,217.36 and 237,415.84
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Solution
The fourth proportional to 421,178.56, 581,217.36 and 237,415.84 is: 327,628.76
Step by Step Solution
- Step 1: Write the proportion equation
421,178.56 : 581,217.36 = 237,415.84 : x - Step 2: Convert to fraction form
421,178.56/581,217.36 = 237,415.84/x - Step 3: Cross multiply
421,178.56x = 581,217.36 × 237,415.84 - Step 4: Simplify right side
421,178.56x = 137,990,207,746.98 - Step 5: Solve for x
x = 137,990,207,746.98/421,178.56 - Step 6: Final answer
x = 327,628.76
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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.