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Finding the Fourth Proportional to 383,288.56, 575,234.16 and 265,786.72

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Solution

The fourth proportional to 383,288.56, 575,234.16 and 265,786.72 is: 398,889.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,288.56 : 575,234.16 = 265,786.72 : x
  2. Step 2: Convert to fraction form
    383,288.56/575,234.16 = 265,786.72/x
  3. Step 3: Cross multiply
    383,288.56x = 575,234.16 × 265,786.72
  4. Step 4: Simplify right side
    383,288.56x = 152,889,600,618.36
  5. Step 5: Solve for x
    x = 152,889,600,618.36/383,288.56
  6. Step 6: Final answer
    x = 398,889.03

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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.