Home / 289,761.21-434,551.82-139,908.33

Finding the Fourth Proportional to 289,761.21, 434,551.82 and 139,908.33

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Solution

The fourth proportional to 289,761.21, 434,551.82 and 139,908.33 is: 209,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,761.21 : 434,551.82 = 139,908.33 : x
  2. Step 2: Convert to fraction form
    289,761.21/434,551.82 = 139,908.33/x
  3. Step 3: Cross multiply
    289,761.21x = 434,551.82 × 139,908.33
  4. Step 4: Simplify right side
    289,761.21x = 60,797,418,735.12
  5. Step 5: Solve for x
    x = 60,797,418,735.12/289,761.21
  6. Step 6: Final answer
    x = 209,819.04

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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.