Finding the Fourth Proportional to 518,266.65, 715,230.05 and 288,824.21
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Solution
The fourth proportional to 518,266.65, 715,230.05 and 288,824.21 is: 398,589.70
Step by Step Solution
- Step 1: Write the proportion equation
518,266.65 : 715,230.05 = 288,824.21 : x - Step 2: Convert to fraction form
518,266.65/715,230.05 = 288,824.21/x - Step 3: Cross multiply
518,266.65x = 715,230.05 × 288,824.21 - Step 4: Simplify right side
518,266.65x = 206,575,749,139.24 - Step 5: Solve for x
x = 206,575,749,139.24/518,266.65 - Step 6: Final answer
x = 398,589.70
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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.