Home / 289,882.21-434,819.27-100,480.45

Finding the Fourth Proportional to 289,882.21, 434,819.27 and 100,480.45

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Solution

The fourth proportional to 289,882.21, 434,819.27 and 100,480.45 is: 150,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,882.21 : 434,819.27 = 100,480.45 : x
  2. Step 2: Convert to fraction form
    289,882.21/434,819.27 = 100,480.45/x
  3. Step 3: Cross multiply
    289,882.21x = 434,819.27 × 100,480.45
  4. Step 4: Simplify right side
    289,882.21x = 43,690,835,415.87
  5. Step 5: Solve for x
    x = 43,690,835,415.87/289,882.21
  6. Step 6: Final answer
    x = 150,719.27

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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.