Home / 219,953.22-329,918.90-128,819.85

Finding the Fourth Proportional to 219,953.22, 329,918.90 and 128,819.85

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Solution

The fourth proportional to 219,953.22, 329,918.90 and 128,819.85 is: 193,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,953.22 : 329,918.90 = 128,819.85 : x
  2. Step 2: Convert to fraction form
    219,953.22/329,918.90 = 128,819.85/x
  3. Step 3: Cross multiply
    219,953.22x = 329,918.90 × 128,819.85
  4. Step 4: Simplify right side
    219,953.22x = 42,500,102,566.07
  5. Step 5: Solve for x
    x = 42,500,102,566.07/219,953.22
  6. Step 6: Final answer
    x = 193,223.37

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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.