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Finding the Fourth Proportional to 219,511.28, 329,716.92 and 144,739.28

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Solution

The fourth proportional to 219,511.28, 329,716.92 and 144,739.28 is: 217,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,511.28 : 329,716.92 = 144,739.28 : x
  2. Step 2: Convert to fraction form
    219,511.28/329,716.92 = 144,739.28/x
  3. Step 3: Cross multiply
    219,511.28x = 329,716.92 × 144,739.28
  4. Step 4: Simplify right side
    219,511.28x = 47,722,989,604.62
  5. Step 5: Solve for x
    x = 47,722,989,604.62/219,511.28
  6. Step 6: Final answer
    x = 217,405.64

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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.