Home / 289,910.03-434,906.06-90,250.57

Finding the Fourth Proportional to 289,910.03, 434,906.06 and 90,250.57

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Solution

The fourth proportional to 289,910.03, 434,906.06 and 90,250.57 is: 135,388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,910.03 : 434,906.06 = 90,250.57 : x
  2. Step 2: Convert to fraction form
    289,910.03/434,906.06 = 90,250.57/x
  3. Step 3: Cross multiply
    289,910.03x = 434,906.06 × 90,250.57
  4. Step 4: Simplify right side
    289,910.03x = 39,250,519,811.45
  5. Step 5: Solve for x
    x = 39,250,519,811.45/289,910.03
  6. Step 6: Final answer
    x = 135,388.62

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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.