Finding the Fourth Proportional to 428,515.21, 642,680.55 and 175,547.65
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Solution
The fourth proportional to 428,515.21, 642,680.55 and 175,547.65 is: 263,283.68
Step by Step Solution
- Step 1: Write the proportion equation
428,515.21 : 642,680.55 = 175,547.65 : x - Step 2: Convert to fraction form
428,515.21/642,680.55 = 175,547.65/x - Step 3: Cross multiply
428,515.21x = 642,680.55 × 175,547.65 - Step 4: Simplify right side
428,515.21x = 112,821,060,253.21 - Step 5: Solve for x
x = 112,821,060,253.21/428,515.21 - Step 6: Final answer
x = 263,283.68
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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.