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Finding the Fourth Proportional to 219,299.20, 329,025.60 and 211,619.20

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Solution

The fourth proportional to 219,299.20, 329,025.60 and 211,619.20 is: 317,502.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,299.20 : 329,025.60 = 211,619.20 : x
  2. Step 2: Convert to fraction form
    219,299.20/329,025.60 = 211,619.20/x
  3. Step 3: Cross multiply
    219,299.20x = 329,025.60 × 211,619.20
  4. Step 4: Simplify right side
    219,299.20x = 69,628,134,251.52
  5. Step 5: Solve for x
    x = 69,628,134,251.52/219,299.20
  6. Step 6: Final answer
    x = 317,502.91

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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.