Home / 289,736.20-434,021.10-201,089.80

Finding the Fourth Proportional to 289,736.20, 434,021.10 and 201,089.80

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Solution

The fourth proportional to 289,736.20, 434,021.10 and 201,089.80 is: 301,229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,736.20 : 434,021.10 = 201,089.80 : x
  2. Step 2: Convert to fraction form
    289,736.20/434,021.10 = 201,089.80/x
  3. Step 3: Cross multiply
    289,736.20x = 434,021.10 × 201,089.80
  4. Step 4: Simplify right side
    289,736.20x = 87,277,216,194.78
  5. Step 5: Solve for x
    x = 87,277,216,194.78/289,736.20
  6. Step 6: Final answer
    x = 301,229.93

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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.