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Finding the Fourth Proportional to 383,491.30, 575,231.55 and 173,128.90

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Solution

The fourth proportional to 383,491.30, 575,231.55 and 173,128.90 is: 259,690.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,491.30 : 575,231.55 = 173,128.90 : x
  2. Step 2: Convert to fraction form
    383,491.30/575,231.55 = 173,128.90/x
  3. Step 3: Cross multiply
    383,491.30x = 575,231.55 × 173,128.90
  4. Step 4: Simplify right side
    383,491.30x = 99,589,205,496.80
  5. Step 5: Solve for x
    x = 99,589,205,496.80/383,491.30
  6. Step 6: Final answer
    x = 259,690.91

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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.