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Finding the Fourth Proportional to 383,676.81, 529,480.62 and 211,614.54

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Solution

The fourth proportional to 383,676.81, 529,480.62 and 211,614.54 is: 292,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,676.81 : 529,480.62 = 211,614.54 : x
  2. Step 2: Convert to fraction form
    383,676.81/529,480.62 = 211,614.54/x
  3. Step 3: Cross multiply
    383,676.81x = 529,480.62 × 211,614.54
  4. Step 4: Simplify right side
    383,676.81x = 112,045,797,840.22
  5. Step 5: Solve for x
    x = 112,045,797,840.22/383,676.81
  6. Step 6: Final answer
    x = 292,031.72

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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.