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Finding the Fourth Proportional to 383,118.48, 574,676.64 and 172,509.84

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Solution

The fourth proportional to 383,118.48, 574,676.64 and 172,509.84 is: 258,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,118.48 : 574,676.64 = 172,509.84 : x
  2. Step 2: Convert to fraction form
    383,118.48/574,676.64 = 172,509.84/x
  3. Step 3: Cross multiply
    383,118.48x = 574,676.64 × 172,509.84
  4. Step 4: Simplify right side
    383,118.48x = 99,137,375,218.14
  5. Step 5: Solve for x
    x = 99,137,375,218.14/383,118.48
  6. Step 6: Final answer
    x = 258,764.27

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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.