Finding the Fourth Proportional to 521,065.26, 781,971.12 and 221,756.10
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Solution
The fourth proportional to 521,065.26, 781,971.12 and 221,756.10 is: 332,792.99
Step by Step Solution
- Step 1: Write the proportion equation
521,065.26 : 781,971.12 = 221,756.10 : x - Step 2: Convert to fraction form
521,065.26/781,971.12 = 221,756.10/x - Step 3: Cross multiply
521,065.26x = 781,971.12 × 221,756.10 - Step 4: Simplify right side
521,065.26x = 173,406,865,883.83 - Step 5: Solve for x
x = 173,406,865,883.83/521,065.26 - Step 6: Final answer
x = 332,792.99
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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.