Finding the Fourth Proportional to 280,497.69, 420,746.49 and 70,135.62
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Solution
The fourth proportional to 280,497.69, 420,746.49 and 70,135.62 is: 105,203.42
Step by Step Solution
- Step 1: Write the proportion equation
280,497.69 : 420,746.49 = 70,135.62 : x - Step 2: Convert to fraction form
280,497.69/420,746.49 = 70,135.62/x - Step 3: Cross multiply
280,497.69x = 420,746.49 × 70,135.62 - Step 4: Simplify right side
280,497.69x = 29,509,315,938.97 - Step 5: Solve for x
x = 29,509,315,938.97/280,497.69 - Step 6: Final answer
x = 105,203.42
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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.