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Finding the Fourth Proportional to 355,195.50, 490,169.79 and 196,219.50

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Solution

The fourth proportional to 355,195.50, 490,169.79 and 196,219.50 is: 270,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,195.50 : 490,169.79 = 196,219.50 : x
  2. Step 2: Convert to fraction form
    355,195.50/490,169.79 = 196,219.50/x
  3. Step 3: Cross multiply
    355,195.50x = 490,169.79 × 196,219.50
  4. Step 4: Simplify right side
    355,195.50x = 96,180,871,108.91
  5. Step 5: Solve for x
    x = 96,180,871,108.91/355,195.50
  6. Step 6: Final answer
    x = 270,782.91

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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.