Home / 219,680.40-329,520.60-131,106.90

Finding the Fourth Proportional to 219,680.40, 329,520.60 and 131,106.90

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Solution

The fourth proportional to 219,680.40, 329,520.60 and 131,106.90 is: 196,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,680.40 : 329,520.60 = 131,106.90 : x
  2. Step 2: Convert to fraction form
    219,680.40/329,520.60 = 131,106.90/x
  3. Step 3: Cross multiply
    219,680.40x = 329,520.60 × 131,106.90
  4. Step 4: Simplify right side
    219,680.40x = 43,202,424,352.14
  5. Step 5: Solve for x
    x = 43,202,424,352.14/219,680.40
  6. Step 6: Final answer
    x = 196,660.35

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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.