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Finding the Fourth Proportional to 548,878.20, 757,195.62 and 355,348.20

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Solution

The fourth proportional to 548,878.20, 757,195.62 and 355,348.20 is: 490,214.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,878.20 : 757,195.62 = 355,348.20 : x
  2. Step 2: Convert to fraction form
    548,878.20/757,195.62 = 355,348.20/x
  3. Step 3: Cross multiply
    548,878.20x = 757,195.62 × 355,348.20
  4. Step 4: Simplify right side
    548,878.20x = 269,068,100,614.88
  5. Step 5: Solve for x
    x = 269,068,100,614.88/548,878.20
  6. Step 6: Final answer
    x = 490,214.59

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1.5x scale

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.