Home / 383,821.18-529,768.20-261,515.86

Finding the Fourth Proportional to 383,821.18, 529,768.20 and 261,515.86

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Solution

The fourth proportional to 383,821.18, 529,768.20 and 261,515.86 is: 360,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,821.18 : 529,768.20 = 261,515.86 : x
  2. Step 2: Convert to fraction form
    383,821.18/529,768.20 = 261,515.86/x
  3. Step 3: Cross multiply
    383,821.18x = 529,768.20 × 261,515.86
  4. Step 4: Simplify right side
    383,821.18x = 138,542,786,423.65
  5. Step 5: Solve for x
    x = 138,542,786,423.65/383,821.18
  6. Step 6: Final answer
    x = 360,956.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.