Home / 219,622.80-329,434.20-130,830.60

Finding the Fourth Proportional to 219,622.80, 329,434.20 and 130,830.60

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Solution

The fourth proportional to 219,622.80, 329,434.20 and 130,830.60 is: 196,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,622.80 : 329,434.20 = 130,830.60 : x
  2. Step 2: Convert to fraction form
    219,622.80/329,434.20 = 130,830.60/x
  3. Step 3: Cross multiply
    219,622.80x = 329,434.20 × 130,830.60
  4. Step 4: Simplify right side
    219,622.80x = 43,100,074,046.52
  5. Step 5: Solve for x
    x = 43,100,074,046.52/219,622.80
  6. Step 6: Final answer
    x = 196,245.90

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1.5x scale

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.