Finding the Fourth Proportional to 621,108.76, 931,860.04 and 221,740.68
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Solution
The fourth proportional to 621,108.76, 931,860.04 and 221,740.68 is: 332,681.31
Step by Step Solution
- Step 1: Write the proportion equation
621,108.76 : 931,860.04 = 221,740.68 : x - Step 2: Convert to fraction form
621,108.76/931,860.04 = 221,740.68/x - Step 3: Cross multiply
621,108.76x = 931,860.04 × 221,740.68 - Step 4: Simplify right side
621,108.76x = 206,631,278,934.43 - Step 5: Solve for x
x = 206,631,278,934.43/621,108.76 - Step 6: Final answer
x = 332,681.31
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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.