Home / 290,864.80-436,297.20-289,021.60

Finding the Fourth Proportional to 290,864.80, 436,297.20 and 289,021.60

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Solution

The fourth proportional to 290,864.80, 436,297.20 and 289,021.60 is: 433,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,864.80 : 436,297.20 = 289,021.60 : x
  2. Step 2: Convert to fraction form
    290,864.80/436,297.20 = 289,021.60/x
  3. Step 3: Cross multiply
    290,864.80x = 436,297.20 × 289,021.60
  4. Step 4: Simplify right side
    290,864.80x = 126,099,314,819.52
  5. Step 5: Solve for x
    x = 126,099,314,819.52/290,864.80
  6. Step 6: Final answer
    x = 433,532.40

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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.