Finding the Fourth Proportional to 421,352.84, 631,900.74 and 221,564.84
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Solution
The fourth proportional to 421,352.84, 631,900.74 and 221,564.84 is: 332,279.68
Step by Step Solution
- Step 1: Write the proportion equation
421,352.84 : 631,900.74 = 221,564.84 : x - Step 2: Convert to fraction form
421,352.84/631,900.74 = 221,564.84/x - Step 3: Cross multiply
421,352.84x = 631,900.74 × 221,564.84 - Step 4: Simplify right side
421,352.84x = 140,006,986,353.98 - Step 5: Solve for x
x = 140,006,986,353.98/421,352.84 - Step 6: Final answer
x = 332,279.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.