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Finding the Fourth Proportional to 490,047.65, 676,265.81 and 275,187.86

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Solution

The fourth proportional to 490,047.65, 676,265.81 and 275,187.86 is: 379,759.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,047.65 : 676,265.81 = 275,187.86 : x
  2. Step 2: Convert to fraction form
    490,047.65/676,265.81 = 275,187.86/x
  3. Step 3: Cross multiply
    490,047.65x = 676,265.81 × 275,187.86
  4. Step 4: Simplify right side
    490,047.65x = 186,100,136,287.80
  5. Step 5: Solve for x
    x = 186,100,136,287.80/490,047.65
  6. Step 6: Final answer
    x = 379,759.27

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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.