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Finding the Fourth Proportional to 219,661.50, 329,761.56 and 144,844.20

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Solution

The fourth proportional to 219,661.50, 329,761.56 and 144,844.20 is: 217,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,661.50 : 329,761.56 = 144,844.20 : x
  2. Step 2: Convert to fraction form
    219,661.50/329,761.56 = 144,844.20/x
  3. Step 3: Cross multiply
    219,661.50x = 329,761.56 × 144,844.20
  4. Step 4: Simplify right side
    219,661.50x = 47,764,049,348.95
  5. Step 5: Solve for x
    x = 47,764,049,348.95/219,661.50
  6. Step 6: Final answer
    x = 217,443.88

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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.