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Finding the Fourth Proportional to 548,879.20, 757,197 and 355,349.20

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Solution

The fourth proportional to 548,879.20, 757,197 and 355,349.20 is: 490,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,879.20 : 757,197 = 355,349.20 : x
  2. Step 2: Convert to fraction form
    548,879.20/757,197 = 355,349.20/x
  3. Step 3: Cross multiply
    548,879.20x = 757,197 × 355,349.20
  4. Step 4: Simplify right side
    548,879.20x = 269,069,348,192.40
  5. Step 5: Solve for x
    x = 269,069,348,192.40/548,879.20
  6. Step 6: Final answer
    x = 490,215.97

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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.